Theresienstein, Public park in Hof, Germany.

Theresienstein is a public park in Hof featuring landscaped gardens, different themed zones, and interconnected walking paths throughout the grounds. The space includes varied garden areas and structures designed to support both leisure activities and nature exploration.

The park began in 1816 as the Fröhlichenstein, a reforestation of bare hills above Hof after the Seven Years' War and logging. It was renamed Theresienstein after Queen Therese Charlotte, wife of King Ludwig I, visited on 22 August 1836. City architect Johann Gottlob Thomas shaped its design from 1861 to 1899, and it was included in the 1994 Bavarian State Garden Show.

The park is named after Queen Therese Charlotte, wife of King Ludwig I of Bavaria, after her visit on 22 August 1836; before that the hill was called Fröhlichenstein. Sections carry the names of people and partner towns: the Thomas-Gedenkpavillon honours city architect Gottlob Thomas, and the Karlsbader Garten was laid out in 2014 with Karlovy Vary garden architects. The Finnish Pavilion was a gift from Hof's twin town Joensuu for the 1994 state garden show.

The park covers 70 hectares on a hill northeast of Hof's centre, above the Lettenbach and reaching toward Haidt; the Saale runs below the Fröhlichenstein in the southwest. The Wirtschaftsgebäude with its summer beer garden stands in the west, the botanical garden on the northwest side, and the 2-hectare zoo has been in the park since 1954. Paths link the sections, so allow time for the climb.

The park contains several separate garden areas, each with its own design approach and character. This division allows visitors to discover different garden concepts and landscape types within a single park.