Třeboň's main attraction is its Renaissance chateau, which includes a museum displaying furniture and weapons. Today's chateau dates from 1611, the replacement for a Gothic castle destroyed by fire. Originally built by the Rožmberk family, it then became one of the main residences of the Schwarzenbergs.
Entry is by one of three guided tours: tour A takes you through the castle's Renaissance interiors; tour B focuses on a 19th-century Schwarzenberg apartment; and in summer (July and August) a third tour explores the chateau's cellars.