AllTrails - Explore over 50,000 trails, reviews, and photos. Share them…
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
Natural Atlas - An evolving, nationwide map of the outdoors
Wikitravel - This article is a Movie/TV Tour.
Outland - discovering unseen places! - Find places that are out of spot but still is worth to visit
Foursquare - Foursquare is all about helping you find new ways to explore your city.