License, verbatimCC0
The Metropolitan Museum of Art: Open Access, Creative Commons Zero (CC0). Flagged isPublicDomain=true in the museum's own record.
Stefano della Bella. Theater at Modena, seen from above and filled with spectators, with a triumphal car at center and horses in formation at lower left and right, from 'La Gara delle Stagioni', 1652. The Metropolitan Museum of Art.