The Gate can be visited
Roman Arch of Germanicus

The Roman Arch of Germanicus is in Saintes, France. Originally erected as a triumphal arch for Emperor Tiberius and his sons, this monument has well-preserved inscriptions, offering insights into the Roman era.
History+
This Roman triumphal arch was constructed in 18 or 19 AD in honor of Emperor Tiberius and his adopted sons Drusus and Germanicus. The funding was provided by a citizen of the then Mediolanum Santonum, Gaius Iulius Rufus. Initially, the double arch stood on the Roman bridge over the Charente, marking the end of the road from Lyon. When the bridge was demolished in 1843, at the suggestion of Prosper Mérimée, then chief commissioner for historical monuments, the arch was dismantled and reconstructed about 15 meters away.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Armin S.
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 45.7460, -0.6290