For a number of years, interrupted only by the NATO bombing in 1999, tourist ships cruise down the Danube and pass through Belgrade. This one (and it's one big ship) is the Swiss Gloria, run by http://www.scylla-tours.com/dynasite.cfm?dsmid=1523, and she passes through Belgrade on her way to the Black Sea. You can see some tourists happily clicking away at Kalemegdan Fortress, which of course you can't see, since it would be behind you! The ship docks for a few hours in Belgrade, giving the tourists a chance to walk around, buy souvenirs, and take more photos. I helped a couple from New York find their way the other day while downtown....and was complimented for my excellent English!
