Altes Rathaus, Museum in the Old Market, Potsdam, Germany

Altes Rathaus is a Palladian building on Alter Markt in Potsdam, erected 1753–1755 to designs by Johann Boumann and Carl Ludwig Hildebrandt based on Palladio's unbuilt Palazzo Angarano in Vicenza. Its seven-axis facade has eight Corinthian three-quarter columns and six sandstone allegorical figures; a domed tambour with eight windows rises above. Since 2012 it has housed the Potsdam Museum.

Construction took place in 1753 under Frederick II as part of his plans to develop Potsdam into a royal residence. Architects Jan Bouman and Carl Ludwig Hildebrandt shaped the city's appearance with this design.

The sandstone figures on the facade represent six civic virtues: vigilance, courage, prosperity, justice, commerce, and prudence. These sculptures show what values the city wanted to convey to its citizens.

The building sits centrally at Alter Markt and is easy to reach on foot. The museum entrance is located at Am Alten Markt 9, and the surrounding square offers plenty of spots to rest and view the architecture from outside.

The dome's original 1754 Atlas figure by Benjamin Giese weighed about 120 Zentner and fell into the street in 1776. Coppersmiths Friedrich Jury and Johann Christoph Wohler then made a gilded copper replacement weighing only 12 Zentner. Of the six sandstone virtues on the facade, only the allegory of commerce survives as an original; it is displayed in the stairwell, while Horst Misch carved copies over eight years.