I have a custom map with an information bubble and custom markers. When I zoom into points of interest such as parks and universities appear and when I click an information
UPDATE Google Maps JavaScript API V3
You can set clickableIcons to false in MapOptions. This will keep the POI icons but disable the infowindows just as you want.
function initialize() {
var myMapOptions = { clickableIcons: false }
}
Further details here...
https://developers.google.com/maps/documentation/javascript/3.exp/reference#MapOptions