A staircase in Prague Castle was built wide & shallow for mounted knights to enter for this competition
The 
wide staircase is named the "riders staircase" as knights would arrive in the ... via 
the Riders' Staircase, built for mounted knights to enter the hall on horseback in... [DOC] [TLE] The voyage of Italy, or, A compleat journey through Italy in two parts ... [PAR] It was built anciently in a round forme, of vast stones, Page 23 going vp in three ...