Valletta has only 6,000 people and is the EU's smallest capital city, but it makes up for that with a huge number of great buildings and fortifications unmatched by much larger cities. The best sight is St.John's Co-Cathedral - unremarkable from the outside, but pure Baroque splendour on the inside. Other interesting sights include the Grand Master's Palace, the Upper Barakka Gardens, the Archaeology Museum and the two harbours on each side of the peninsula Valletta occupies (a harbour cruise is not to be missed). The city is so small that all sights can easily be reached on foot, but it can still take quite a while, because on any given day, thousands of cruise-ship passengers crowd the streets.