Credit – the featured image is Ross Calder’s recent work for one of his SpotWalla Trips… 

Within your GeoJSON file, a point can carry an icon attribute:

“icon”: “https://www.gstatic.com/mapspro/images/stock/503-wht-blank_maps.png”

Brief list

– https://maps.google.com/mapfiles/ms/micons/POI.png

– https://maps.google.com/mapfiles/ms/micons/bar.png

– https://maps.google.com/mapfiles/ms/micons/camera.png

– https://maps.google.com/mapfiles/ms/micons/caution.png

– https://maps.google.com/mapfiles/ms/micons/coffeehouse.png

– https://maps.google.com/mapfiles/ms/micons/ferry.png

– https://maps.google.com/mapfiles/ms/micons/flag.png

– https://maps.google.com/mapfiles/ms/micons/gas.png

– https://maps.google.com/mapfiles/ms/micons/info.png

– https://maps.google.com/mapfiles/ms/micons/lodging.png

– https://maps.google.com/mapfiles/ms/micons/mechanic.png

– https://maps.google.com/mapfiles/ms/micons/motorcycling.png

– https://maps.google.com/mapfiles/ms/micons/picnic.png

– https://maps.google.com/mapfiles/ms/micons/purple-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/question.png

– https://maps.google.com/mapfiles/ms/micons/red-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/restaurant.png

– https://maps.google.com/mapfiles/ms/micons/snack_bar.png

– https://maps.google.com/mapfiles/ms/micons/toilets.png

Bigger List

– https://maps.google.com/mapfiles/ms/micons/POI.png

– https://maps.google.com/mapfiles/ms/micons/arts.png

– https://maps.google.com/mapfiles/ms/micons/bar.png

– https://maps.google.com/mapfiles/ms/micons/blue-dot.png

– https://maps.google.com/mapfiles/ms/micons/blue-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/blue.png

– https://maps.google.com/mapfiles/ms/micons/bus.png

– https://maps.google.com/mapfiles/ms/micons/cabs.png

– https://maps.google.com/mapfiles/ms/micons/camera.png

– https://maps.google.com/mapfiles/ms/micons/campfire.png

– https://maps.google.com/mapfiles/ms/micons/campground.png

– https://maps.google.com/mapfiles/ms/micons/caution.png

– https://maps.google.com/mapfiles/ms/micons/coffeehouse.png

– https://maps.google.com/mapfiles/ms/micons/convienancestore.png

– https://maps.google.com/mapfiles/ms/micons/cycling.png

– https://maps.google.com/mapfiles/ms/micons/dollar.png

– https://maps.google.com/mapfiles/ms/micons/drinking_water.png

– https://maps.google.com/mapfiles/ms/micons/earthquake.png

– https://maps.google.com/mapfiles/ms/micons/electronics.png

– https://maps.google.com/mapfiles/ms/micons/euro.png

– https://maps.google.com/mapfiles/ms/micons/fallingrocks.png

– https://maps.google.com/mapfiles/ms/micons/ferry.png

– https://maps.google.com/mapfiles/ms/micons/firedept.png

– https://maps.google.com/mapfiles/ms/micons/fishing.png

– https://maps.google.com/mapfiles/ms/micons/flag.png

– https://maps.google.com/mapfiles/ms/micons/gas.png

– https://maps.google.com/mapfiles/ms/micons/golfer.png

– https://maps.google.com/mapfiles/ms/micons/green-dot.png

– https://maps.google.com/mapfiles/ms/micons/green.png

– https://maps.google.com/mapfiles/ms/micons/grn-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/groecerystore.png

– https://maps.google.com/mapfiles/ms/micons/helicopter.png

– https://maps.google.com/mapfiles/ms/micons/hiker.png

– https://maps.google.com/mapfiles/ms/micons/homegardenbusiness.png

– https://maps.google.com/mapfiles/ms/micons/horsebackriding.png

– https://maps.google.com/mapfiles/ms/micons/hospitals.png

– https://maps.google.com/mapfiles/ms/micons/hotsprings.png

– https://maps.google.com/mapfiles/ms/micons/info.png

– https://maps.google.com/mapfiles/ms/micons/info_circle.png

– https://maps.google.com/mapfiles/ms/micons/landmarks-jp.png

– https://maps.google.com/mapfiles/ms/micons/lightblue.png

– https://maps.google.com/mapfiles/ms/micons/lodging.png

– https://maps.google.com/mapfiles/ms/micons/ltblu-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/ltblue-dot.png

– https://maps.google.com/mapfiles/ms/micons/man.png

– https://maps.google.com/mapfiles/ms/micons/marina.png

– https://maps.google.com/mapfiles/ms/micons/mechanic.png

– https://maps.google.com/mapfiles/ms/micons/motorcycling.png

– https://maps.google.com/mapfiles/ms/micons/movies.png

– https://maps.google.com/mapfiles/ms/micons/orange-dot.png

– https://maps.google.com/mapfiles/ms/micons/orange.png

– https://maps.google.com/mapfiles/ms/micons/parkinglot.png

– https://maps.google.com/mapfiles/ms/micons/partly_cloudy.png

– https://maps.google.com/mapfiles/ms/micons/pharmacy-us.png

– https://maps.google.com/mapfiles/ms/micons/phone.png

– https://maps.google.com/mapfiles/ms/micons/picnic.png

– https://maps.google.com/mapfiles/ms/micons/pink-dot.png

– https://maps.google.com/mapfiles/ms/micons/pink-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/pink.png

– https://maps.google.com/mapfiles/ms/micons/plane.png

– https://maps.google.com/mapfiles/ms/micons/police.png

– https://maps.google.com/mapfiles/ms/micons/postoffice-jp.png

– https://maps.google.com/mapfiles/ms/micons/postoffice-us.png

– https://maps.google.com/mapfiles/ms/micons/purple-dot.png

– https://maps.google.com/mapfiles/ms/micons/purple-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/purple.png

– https://maps.google.com/mapfiles/ms/micons/question.png

– https://maps.google.com/mapfiles/ms/micons/rail.png

– https://maps.google.com/mapfiles/ms/micons/rainy.png

– https://maps.google.com/mapfiles/ms/micons/rangerstation.png

– https://maps.google.com/mapfiles/ms/micons/realestate.png

– https://maps.google.com/mapfiles/ms/micons/recycle.png

– https://maps.google.com/mapfiles/ms/micons/red-dot.png

– https://maps.google.com/mapfiles/ms/micons/red-pushpin.png

– https://maps.google.com/mapfiles/ms/micons/red.png

– https://maps.google.com/mapfiles/ms/micons/restaurant.png

– https://maps.google.com/mapfiles/ms/micons/sailing.png

– https://maps.google.com/mapfiles/ms/micons/salon.png

– https://maps.google.com/mapfiles/ms/micons/shopping.png

– https://maps.google.com/mapfiles/ms/micons/ski.png

– https://maps.google.com/mapfiles/ms/micons/snack_bar.png

– https://maps.google.com/mapfiles/ms/micons/snowflake_simple.png

– https://maps.google.com/mapfiles/ms/micons/sportvenue.png

– https://maps.google.com/mapfiles/ms/micons/subway.png

– https://maps.google.com/mapfiles/ms/micons/sunny.png

– https://maps.google.com/mapfiles/ms/micons/swimming.png

– https://maps.google.com/mapfiles/ms/micons/toilets.png

– https://maps.google.com/mapfiles/ms/micons/trail.png

– https://maps.google.com/mapfiles/ms/micons/tram.png

– https://maps.google.com/mapfiles/ms/micons/tree.png

– https://maps.google.com/mapfiles/ms/micons/truck.png

– https://maps.google.com/mapfiles/ms/micons/volcano.png

– https://maps.google.com/mapfiles/ms/micons/water.png

– https://maps.google.com/mapfiles/ms/micons/waterfalls.png

– https://maps.google.com/mapfiles/ms/micons/webcam.png

– https://maps.google.com/mapfiles/ms/micons/wheel_chair_accessible.png

– https://maps.google.com/mapfiles/ms/micons/woman.png

– https://maps.google.com/mapfiles/ms/micons/yellow-dot.png

– https://maps.google.com/mapfiles/ms/micons/yellow.png

– https://maps.google.com/mapfiles/ms/micons/yen.png

– https://maps.google.com/mapfiles/ms/micons/ylw-pushpin.png

Shaddow Icons for the above sets

– https://maps.google.com/mapfiles/ms/micons/POI.shadow.png

– https://maps.google.com/mapfiles/ms/micons/arts.shadow.png

– https://maps.google.com/mapfiles/ms/micons/bar.shadow.png

– https://maps.google.com/mapfiles/ms/micons/bus.shadow.png

– https://maps.google.com/mapfiles/ms/micons/cabs.shadow.png

– https://maps.google.com/mapfiles/ms/micons/camera.shadow.png

– https://maps.google.com/mapfiles/ms/micons/campfire.shadow.png

– https://maps.google.com/mapfiles/ms/micons/campground.shadow.png

– https://maps.google.com/mapfiles/ms/micons/caution.shadow.png

– https://maps.google.com/mapfiles/ms/micons/coffeehouse.shadow.png

– https://maps.google.com/mapfiles/ms/micons/convienancestore.shadow.png

– https://maps.google.com/mapfiles/ms/micons/cycling.shadow.png

– https://maps.google.com/mapfiles/ms/micons/dollar.shadow.png

– https://maps.google.com/mapfiles/ms/micons/drinking_water.shadow.png

– https://maps.google.com/mapfiles/ms/micons/earthquake.shadow.png

– https://maps.google.com/mapfiles/ms/micons/electronics.shadow.png

– https://maps.google.com/mapfiles/ms/micons/euro.shadow.png

– https://maps.google.com/mapfiles/ms/micons/fallingrocks.shadow.png

– https://maps.google.com/mapfiles/ms/micons/ferry.shadow.png

– https://maps.google.com/mapfiles/ms/micons/firedept.shadow.png

– https://maps.google.com/mapfiles/ms/micons/fishing.shadow.png

– https://maps.google.com/mapfiles/ms/micons/flag.shadow.png

– https://maps.google.com/mapfiles/ms/micons/gas.shadow.png

– https://maps.google.com/mapfiles/ms/micons/golfer.shadow.png

– https://maps.google.com/mapfiles/ms/micons/grocerystore.shadow.png

– https://maps.google.com/mapfiles/ms/micons/groecerystore.shadow.png

– https://maps.google.com/mapfiles/ms/micons/helicopter.shadow.png

– https://maps.google.com/mapfiles/ms/micons/hiker.shadow.png

– https://maps.google.com/mapfiles/ms/micons/homegardenbusiness.shadow.png

– https://maps.google.com/mapfiles/ms/micons/horsebackriding.shadow.png

– https://maps.google.com/mapfiles/ms/micons/hospitals.shadow.png

– https://maps.google.com/mapfiles/ms/micons/hotsprings.shadow.png

– https://maps.google.com/mapfiles/ms/micons/info.shadow.png

– https://maps.google.com/mapfiles/ms/micons/info_circle.shadow.png

– https://maps.google.com/mapfiles/ms/micons/landmarks-jp.shadow.png

– https://maps.google.com/mapfiles/ms/micons/lodging.shadow.png

– https://maps.google.com/mapfiles/ms/micons/man.shadow.png

– https://maps.google.com/mapfiles/ms/micons/marina.shadow.png

– https://maps.google.com/mapfiles/ms/micons/mechanic.shadow.png

– https://maps.google.com/mapfiles/ms/micons/motorcycling.shadow.png

– https://maps.google.com/mapfiles/ms/micons/movies.shadow.png

– https://maps.google.com/mapfiles/ms/micons/msmarker.shadow.png

– https://maps.google.com/mapfiles/ms/micons/parkinglot.shadow.png

– https://maps.google.com/mapfiles/ms/micons/partly_cloudy.shadow.png

– https://maps.google.com/mapfiles/ms/micons/pharmacy-us.shadow.png

– https://maps.google.com/mapfiles/ms/micons/phone.shadow.png

– https://maps.google.com/mapfiles/ms/micons/picnic.shadow.png

– https://maps.google.com/mapfiles/ms/micons/plane.shadow.png

– https://maps.google.com/mapfiles/ms/micons/police.shadow.png

– https://maps.google.com/mapfiles/ms/micons/postoffice-jp.shadow.png

– https://maps.google.com/mapfiles/ms/micons/postoffice-us.shadow.png

– https://maps.google.com/mapfiles/ms/micons/pushpin_shadow.png

– https://maps.google.com/mapfiles/ms/micons/question.shadow.png

– https://maps.google.com/mapfiles/ms/micons/rail.shadow.png

– https://maps.google.com/mapfiles/ms/micons/rainy.shadow.png

– https://maps.google.com/mapfiles/ms/micons/rangerstation.shadow.png

– https://maps.google.com/mapfiles/ms/micons/realestate.shadow.png

– https://maps.google.com/mapfiles/ms/micons/recycle.shadow.png

– https://maps.google.com/mapfiles/ms/micons/restaurant.shadow.png

– https://maps.google.com/mapfiles/ms/micons/sailing.shadow.png

– https://maps.google.com/mapfiles/ms/micons/salon.shadow.png

– https://maps.google.com/mapfiles/ms/micons/shopping.shadow.png

– https://maps.google.com/mapfiles/ms/micons/ski.shadow.png

– https://maps.google.com/mapfiles/ms/micons/snack_bar.shadow.png

– https://maps.google.com/mapfiles/ms/micons/snowflake_simple.shadow.png

– https://maps.google.com/mapfiles/ms/micons/sportvenue.shadow.png

– https://maps.google.com/mapfiles/ms/micons/subway.shadow.png

– https://maps.google.com/mapfiles/ms/micons/sunny.shadow.png

– https://maps.google.com/mapfiles/ms/micons/swimming.shadow.png

– https://maps.google.com/mapfiles/ms/micons/toilets.shadow.png

– https://maps.google.com/mapfiles/ms/micons/trail.shadow.png

– https://maps.google.com/mapfiles/ms/micons/tram.shadow.png

– https://maps.google.com/mapfiles/ms/micons/tree.shadow.png

– https://maps.google.com/mapfiles/ms/micons/truck.shadow.png

– https://maps.google.com/mapfiles/ms/micons/volcano.shadow.png

– https://maps.google.com/mapfiles/ms/micons/water.shadow.png

– https://maps.google.com/mapfiles/ms/micons/waterfalls.shadow.png

– https://maps.google.com/mapfiles/ms/micons/webcam.shadow.png

– https://maps.google.com/mapfiles/ms/micons/wheel_chair_accessible.shadow.png

– https://maps.google.com/mapfiles/ms/micons/woman.shadow.png

– https://maps.google.com/mapfiles/ms/micons/yen.shadow.png