The site I mentioned FourUglyMonsters.com is Devin Night's website.
Also the Cartographers' Guild, which I am a senior member, Devin is a member, as are every developer of mapping software, many fantasy authors creating their own world maps there too. But that site is full of RPG maps, as well as tokens, tutorials, resources, map elements (compass roses, GIMP/Photoshop brushes), monthly map contests, software tips, an entire boad dedicated to Work-in-Progress maps, where the site's experts critique and help out users making their maps. Its the best site online for RPG map anything - all the top RPG industry cartographers are members. And plenty of "never created a map before, but want to" new members.
If you're just looking for map objects, they are there, but if you want to learn anything more about creating maps for your games, there is no better place.
GP
PS: I have over 300 maps posted at the Cartographers' Guild - I'm a pro fantasy cartographer, and an RPG publisher.