The oldest surviving building in Antwerp, a small medieval river castle next to the Scheldt. The original tower dates from around 1200 and was used as a prison from the 1300s; the castle was rebuilt in the 16th century by Charles V. After centuries serving as a prison, a private house, and most recently the National Maritime Museum, the building reopened in 2022 as the city's main visitor centre.
The new permanent exhibition gives a quick history of Antwerp through the centuries, useful as a 45-minute orientation if you are just starting your visit. There is a roof terrace with views of the river. At the entrance, the statue of Lange Wapper — the giant of local folklore — has been outside the castle since 1963. Free entry to the courtyard and statue; admission charge for the exhibition.