Wikihood shows you the Neighbourhood
This is probably one of the most useful apps out there. It’s a travel guide based on Wikipedia. Just type in a city and you get lots of information on historic and current buildings, interesting places and famous people. Or you can use the GPS of your iPhone to find out about stuff right around you. You may chose between different languages and there are many pictures too. If you are abroad and want to use Wikihood offline, simply pick a city and download the guide. There is a free version and a paid pro version for $4.99. If you find this interesting take a look at Wikihood People!