Guides by Lonely Planet - Explore city guides curated by experts.
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.
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Lonely Planet - travel guide book publisher
Sygic Travel Maps - Itinerary planner for independent travelers
The Basetrip - Cities - Travel information for 650+ cities & 230+ countries