Wachberg, Mountain summit in Sebnitz, Germany.

Wachberg is a 496.6-metre summit about one kilometre north of Saupsdorf, directly on the Czech border. The mountain belongs to the Saxon Switzerland landscape but geologically to the Lusatian Bergland; its massif consists of Lusatian granodiorite, with block fields in the slope forests and a basalt stock on the southern slope. The summit area is covered mainly by spruce forest.

The name Wachberg likely derives from "Wache-Berg": from the 15th century the crest marked the border between the Kingdom of Bohemia and the Electorate of Saxony, and border guards used the summit as a lookout. In 1812 the Saupsdorf hereditary judge Thiermann, then owner of the hill, had a small unlicensed mountain hut built on the summit; in 1851, with tourism growing in Saxon Switzerland, he added the first mountain inn and a wooden observation tower, giving rise to the name "Schweizerkrone".

The name likely derives from Wache-Berg, as border guards used the summit as a lookout from the 15th century, when the frontier between Saxony and Bohemia ran along the ridge. Around 1851 the tourism name "Schweizerkrone" arose, still used in the tourist trade. The Wachbergbaude inn and guesthouse has been family-owned since 1898.

A road from Saupsdorf leads to a car park just below the summit; winter conditions can severely restrict this access. The blue-marked Dr.-Alfred-Meiche-Weg runs along the ridge between Sebnitz and Hinterhermsdorf and forms part of the European long-distance trail E3. Near the Wachbergbaude a green trail branches off across the border to Mikulášovice in the Czech Republic.

The summit is known in tourism as the "Schweizerkrone" (Swiss Crown), a name dating from the 1850s when the first mountain inn and a wooden lookout tower were built. A memorial plaque inside the Wachbergbaude, unveiled on 30 September 2011, marks the 200th anniversary of balloonist Wilhelmine Reichard's emergency landing here.