Photo Find - Navigate to the exact spot a photo was taken
Guides by Lonely Planet - Explore city guides curated by experts.
Detour - Immersive audio walks, now in 17 cities
Foursquare City Guide - Foursquare City Guide is a Free to use mobile application that will lead you to the perfect spot anytime anywhere around the world.
Photo Map - High performance Android app to keep track of your photos on the map.
Lonely Planet - travel guide book publisher