Noordkasteel, Military fort and recreational park in Oosterweel, Belgium

Noordkasteel is a former military fort located between Amerikadok and the Scheldt River, featuring preserved ramparts and a rowing pond created from the original moat system. The grounds include open green spaces accessible to visitors throughout the year.

Built in 1862 on the land of the vanished polder village of Oosterweel, the Noordkasteel replaced Fort Ferdinand, erected by Napoleon Bonaparte in 1812, and closed the ring of forts defending Antwerp. Most of it was demolished in 1881, nineteen years after construction, for the Amerikadok and Afrikadok; the docks had been planned since 1872 and were begun in 1882. It was struck from the military register in 1910.

The name Noordkasteel recalls the citadel built in 1862. From 1934, under mayor Camille Huysmans, the 61-hectare domain became a public recreation ground with an open-air swimming pool. Swimming in the pond is now forbidden. The site is marked by the painted lettering "NOORDKAS STEEL" and a sign reading "DOUANELOODS STAD ANTWERPEN".

Since October 2021 the area around the Noordkasteel has been partly closed off for the construction of the Oosterweel junction, with works expected to run until 2033. The remaining green zone with the piece of rampart lies by the rowing pond near the Antwerp Maritime Academy on the Oosterweelsteenweg. Swimming in the pond is prohibited.

The site will become part of Ringpark Noordkasteel when the Oosterweel junction opens after 2030. This project will keep the existing pond while significantly expanding green spaces to create a larger connected recreation area.