Water tower on the Burgberg, Historic water tower on Burgberg hill, Erlangen, Germany.

The Water tower on the Burgberg is a 32-metre tower built in 1904–1905 to designs by city architect Franz Kreuter and Munich assistant Hugo Sieber. Its slender shaft with rounded core and square corner pilasters rises from a high two-stepped base, and the 100-cubic-metre tank sits in the wood-clad head. The concrete structure's historicist facade, with rusticated stonework, oriel windows, pointed arches, arrow-slit windows and a brick-tiled pyramidal roof, resembles a medieval bergfried.

Erlangen's first central water network began operating on 30 November 1891, fed by a waterworks in the western Regnitz valley and a high reservoir on the Burgberg slope. As villas rose along Burgbergstraße in the 1890s, the city council decided at the start of the 20th century to add a tower. Built in 1904–1905 to plans by Stadtbaurat Franz Kreuter and designs by Munich assistant Hugo Sieber, it first supplied only the Burgberg properties and was connected to the city network later.

The tower's spire is one of Erlangen's landmarks, and its medieval-looking keep shape often makes visitors mistake it for a castle tower. The name Burgberg is misleading: no fortified building has ever been documented on the hill. The tower was once open to the public for a fee, offering views as far as Nuremberg, Fürth and Forchheim.

The tower stands on the Burgberg, reachable on foot via paths from the Burgbergstraße area; the climb is short but partly steep. The tower itself is not open to visitors, so the view over Erlangen toward Nuremberg, Fürth and Forchheim is no longer available from its platform. The adjacent 1956 high reservoir and the 2015–2017 extension on the Rathsberg are not visitable either.

The tower's exterior, with its bossed stonework, oriel turrets, pointed-arch details and slit-like windows, was designed to resemble a medieval keep, and out-of-town visitors often mistake it for one. No castle has ever been documented on the Burgberg, despite the hill's name.