The Jewel Tower, Westminster. Not to be confused with the Jewel House at the Tower of London, home of the Crown Jewels, it is rather, one of only two surviving sections of the medieval royal Palace of Westminster, the other being Westminster Hall. The Jewel Tower aka the "King's Privy Wardrobe" was built in 1365-1366 to house the private jewels and treasures of gold and silver belonging to Edward III.