Why, from what I've been told, all Prague is a tourist attraction
the best places I know about are Vitus cathedral, wherever the crown jewels of the Bohemians, Wenceslas square, the Dancing House, anything to do with Kafka, and wherever building it was where the two Catholic dudes were thrown overboard, starting the 30 years war. and if you are into it, there is a battlefield not far from Prague, where Frederick II won a battle, and one of his Generals, Kurt Christoph von Schwerin fell (1757). you might find Schwerin's death marker, around where he fell in said battle.
oh, and Prague castle.
EDIT: Hradčany castle was where the two catholics got hurled.
EDIT2: ooh, and where Reinhard Heydrich got bombed. srsly, this place has soo much

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