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.
Instalist - The most Instagrammable photo spots around the world 📸🌎
Lonely Planet - travel guide book publisher
yapQ - Turn your smartphone into an audio tour guide