Image: original: Jeanhousen derivative work: P199 (CC BY-SA 3.0) via Wikimedia Commons
Tongeren (Atuatuca Tungrorum)
Limburg
Tongeren is Belgium's oldest city and one of the most important Roman archaeological sites in the country. Founded as Atuatuca Tungrorum, it became a major administrative and trading centre in the Roman province of Germania Inferior.
Visitors can explore the remains of Roman walls, archaeological discoveries and the excellent Gallo-Roman Museum, which explains life in the region from prehistoric times through the Roman era.
Tongeren provides the clearest connection between modern Belgium and the Roman world. The city's streets still follow ancient patterns, and it connects well with Limburg's cycling routes.
Best for: Belgium's greatest Roman city, with 2,000 years of layers.