The historic town centre with the castle complex is well preserved and is protected by law as an urban monument reservation.

The Lužnice river flows through the eastern part of the territory and supplies Rožmberk pond with water.

[6] The greatest development occurred in the 16th and early 17th centuries, when Jakub Krčín was at the head of the Rosenberg family business and started to establish new ponds in the area.

Třeboň further suffered during the Thirty Years' War, when it was held by a regiment of Scots led by Colonel Sir John Seton from 1620 to early 1622.

[8] After World War II, the first larger industry (clothing factory and large-scale agricultural production) was established in the town.

[6] Třeboň is a tourist destination, and this is the area's major economic activity, along with agriculture, the spa industry and other services.

[11] The archive was held at the 15th-century Třeboň castle for many years,[12] although a substantial portion was moved to the municipal offices in 2014.

The peat spa in Třeboň focuses on the treatment of musculoskeletal disorders, rheumatic problems, and post-injury and post-surgery reconvalescence.

[4] Třeboň lies at the crossroads of two important roads: the I/24 (which connects the D3 motorway with the Czech-German border in Halámky, part of the European route E49).

In 1638, a massive quadrangular 31 metres (102 ft) high tower was added to the town hall.

[18] The Church of Our Lady Queen and Saint Giles is the largest building in the complex of the former Augustinian monastery.