The Sint-Jacobskerk dominates the small market square at the heart of the old town. The Gothic church dates to the late 14th century, with parts rebuilt many times — most dramatically after the 1911 tower collapse. Inside, the most notable feature is the simple Calvinist whitewash and the high vaulted ceiling.
The tower is climbable in summer for a small fee and gives a good view across the harbour and the Scheldt. Hours are limited; check at the muZEEum.