Wallraf-Richartz Museum

Obenmarspforten, 40, Koeln
The Wallraf–Richartz Museum is one of the three major museums in Cologne, Germany. It houses an art gallery with a collection of fine art from the medieval period to the early twentieth century.

The museum dates back to the year 1824, when the comprehensive collection of medieval art from Franz Ferdinand Wallraf came to the city of Cologne by inheritance. The first building was donated by Johann Heinrich Richartz, and the museum was opened in 1861, just after his death. 

Source: wallraf.museum