Tongeren is a city located in the province of Limburg within the southeastern corner of the Flemish region of Belgium. It serves as a significant historical site, recognized as the oldest town in the country.
The city's historical importance stems from its status as the only Roman administrative capital within Belgian borders. Originally inhabited by the Tungri, it was known as Atuatuca Tungrorum and functioned as the administrative center of the Civitas Tungrorum district. As of January 1, 2025, Tongeren is part of the newly formed municipality of Tongeren-Borgloon.