"the golden gate" on the south side of the cathedral

Officially the "main" enterance to the cathedral, which faces the
royal palace. Just below the gate to the left is where the inner
chapel of St. Wenceslas is located, which houses the Czech royal
crown... Held in a vault with 7 keys protected by various Czech
dignitaries, the crown is only trotted put for very special occasions,
and must always be returned the same day.