Old Saint-Peter church, Romanesque bell tower in Neder-Over-Heembeek, Brussels, Belgium

The Old Saint-Peter Church is a surviving Romanesque tower, the last remnant of the church of Neder-Heembeek. Built of light grey and beige sandstone rubble, it rises to a dark pitched roof. Its upper storey has a round-arched louvered opening, below which a narrow window is divided by a central shaft; lower down, a large blind arch outlined in red brick is filled with paler stonework. Iron wall anchors dot the surface.

The tower is the last remnant of the Saint-Peter church of Neder-Heembeek and dates from the late 11th century, when it may have served as a refuge for villagers. The adjoining church was rebuilt several times; the 1860 building was struck by lightning on 21 August 1932 and burned. The church was demolished in February 1937, leaving only the tower, which Jean Rombaux restored in the 1960s and which was listed as a historic monument on 17 April 1997.

The tower is the last remnant of the Saint-Peter church, whose parish was merged with Over-Heembeek's in 1814. The 1860 church burned after a lightning strike on 21 August 1932, and the tower was restored in the 1960s by city architect Jean Rombaux. Two stone heads are visible on the tower's north side.

The tower stands on the site of the former church in Neder-Heembeek, a section of the City of Brussels. The nave and square apse foundations of the 1860 church are still visible east of the tower, and the Kluis of 1487 faces it across the way. The tower itself is closed; the west portal and window above it, both added in 1735, were walled up during the 1960 restoration.

The tower is the last remnant of the Saint-Peter church: the 1860 nave was struck by lightning on 21 August 1932 and demolished in February 1937, leaving only the Romanesque tower. East of it, the bases of the nave, side aisle and square apse walls of the lost church can still be seen.