Since it’s launch, Google's personalized maps are a great way to share details about your trips or to place geographical information in its context. People around the globe has created some fantastic contents. Unfortunately, it's not very easy to find them as the custom maps are buried at the bottom of Google's local search results.
This Mapplet for browsing popular user-created maps, makes it easy to find public maps created by other users via the My Maps tab. Pan the map to your favorite destination, and you'll see some user-created maps for that area on the left-hand side of the screen. Use the Mapplet to find interesting things to do on your vacation, read stories from people on other continents, or broadcast your own views. If you find something you really like, you can click "Save to My Maps" and it will be added to your My Maps tab.
Source:→ Google LatLong Blog