The Oostpoort (Eastern Gate) is an example of Brick Gothic architecture. Its twin towers flank an entrance moat and bridge. The gate was built around 1400. In the 16th century they were raised with hexagonal floors and high pointed spires. The gate is located in perhaps one of the most enchanting corners of Delft. The Oostpoort was once known as “Saint Catherine’s Gate” and is the eldest medieval entranceway to Delft.

Originally there were nine gates to Delft. Eight were demolished by 1847. The Oostpoort is the last remaining gate in the city. The gate consists of a land-gate and a water-gate that are connected by the remains of the city wall.

The Oostpoort was last restored in 1962-1964. Nowadays it serves as an art gallery and private residence.