Büchelturm, Medieval defensive tower in Sankt Vith, Belgium.

Büchelturm is a cylindrical tower of rough, irregular rubble stone in brown, gray and reddish tones, standing on a paved surface in Sankt Vith. Its flat, roofless top carries a slender pole with a small red flag. Low on the front face is a dark metal door, with a rectangular plaque of incised lettering directly above it and a single narrow vertical slit higher on the left.

Built in 1350 as part of Sankt Vith's fortification system with seven towers, this structure withstood demolition attempts in 1689 and bombardment in 1944. It remains one of few original defensive towers from the town's medieval period.

The red sandstone plaque above the entrance carries an inscription, and the tower has been a protected monument since 1956. Restored in 1961, the Büchelturm serves as the town's landmark, a role it holds in local usage rather than through any religious or ceremonial function.

The tower stands on a paved surface in Sankt Vith and is a protected monument since 1956. Its only visible openings are the present-day entrance at the base and a pointed-arch passage to the former battlement walk at first-floor level. The interior has round-arched vaults on both floors; the entrance is low and narrow, so watch your head.

The tower is the last surviving remnant of Sankt Vith's town wall, which Jan van Valkenburg had built in 1350 with seven towers; the wall was levelled in 1689. It was restored in 1961 and has been a protected monument since 1956. Above the dark metal door, a red sandstone plaque carries an inscription.