Important part of Czech history at the top of the Venceslas square. Observe the beautiful architecture, holes in the facade coming from the Warsaw-pact countries occupation in August 1968, or explore just the interesting exhibitions inside.
Affordable price, beautiful view. If you spend more than 1 day in Prague, you will definitely pass at least the Venceslas square. It is in the centre, you won´t be looking for it for long. There is also a new building next to the old one and few more around the city.