A Gallo-Roman underground gallery and crypt, now a semi-subterranean venue for municipal expositions, was initially constructed around AD 200 beneath the forum of Reims's predecessor, the Roman town of Durocortorum.
- Address: Pl. du Forum, Reims, 51100
- Phone: /03–26–77–45–03
- Cost: Free
- Hours: June–Sept., daily 2–6
- Location: Reims