City Guides, a product by National Geographic and Rally Interactive is now live in the App Store.
*Download it*: https://itunes.apple.com/us/app/city-guides-by-national-geographic/id592453480?ls=1&mt=8
*edit* Thanks for all the love guys! Hopefully some of you got to download it. The in-app purchases are definitely worth if it you plan on travelling to these cities. Also, most of the great interactions and content are locked up in the purchases -- there was my two sentence sales pitch ;)