The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From UIEvolution, Inc.:
Barcelona, the luxurious and historical capital of Spain is a vacation unlike any other. The second largest city of Spain plays host to a variety of riveting landmarks surrounded by Barcelona's exquisite history, as well as a variety of beautiful and intriguing areas. "Top 25: Barcelona" extends the Top 25 series into international territories and allows you a chance to discover, read, and possibly plan a trip to the amazing city of Barcelona. With an easy-to-use instant phone call feature, you can quickly call landmarks and begin researching and possibly planning for your trip to Barcelona! And upon visiting, it's as easy as a tap of the screen to brag to all of your friends via our easy-to-use Facebook integration!Come discover more about Barcelona and all of it's glory with Top 25: Barcelona!