English: The Powder Gate can trace its origins back to the 11th century, when the original gate was one of 13 entrances to Prague's Old Town. Work on the present structure began during the reign of King Vladislav II in 1475 and was modelled on the Old Town Bridge Tower, built a century earlier. Originally known as the New Tower, its name was changed to the Powder Gate in the 17th century when it was used to store gunpowder