Erected in AD 175 in honor of Marcus Aurelius, this 16.5m-high Roman triumphal arch stands very near the columns of a Roman theater and the vestiges of an aqueduct (all still visible), which were discovered in the late 19th-century.
The site, which attests to the importance of Besançon as a site of Gallo-Roman civilization, was restored as an "English-style architectural garden" in 2006.
