Bridge over the Vltava River in central Prague. The Vltava, the longest river in the Czech Republic, Czech capital is divided into two parts. A nice walk to do in Prague is the riverside walk at sunset and can see the Prague Castle, Charles Bridge, and many other landmarks. If we continue south along the river, we arrive at the so-called new zone. The appearance is the same as in the old, with the same architectural style and colorful facades, although the streets are wider and there is less historical buildings. One of the most striking is the Dancing House, a strange descontructivista style building that draws much attention. He's very nice to see that in the midst of many classic and regal buildings is this house dancing, looking hiperfuturista, but that does not clash at all with the environment. A good example of how to make a nice building today.