Foursquare - Foursquare is all about helping you find new ways to explore your city.
GeoGuessr - GeoGuessr is a new way to explore the world in a gaming style.
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.
City Guesser - City Guesser is a GeoGuessr alternative that uses real city footage. Get dropped into a random city and use surroundings like moving vehicles, people walking, and language to help you guess your location.
Yellow Pages - YP.com local search connects you with over 19 million local businesses.
Geotastic - Geotastic is one of the top sites that offer multiplayer geo quiz apps, all free of cost.