Related topics:HistoryRoyaltyBuildingsLondonMore HistoryThe Tower of London has impressed—and terrified—people for nearly 1,000 yearsLondonBuildingsPrisonRoyaltyMoreHistoryThe contentious history of U.S. presidential pardons—from the Whiskey Rebellion to WatergateDonald TrumpLaw and LegislationPresidents of the United StatesPrisonMoreHistoryAlcatraz’s gardens are flourishing, against all oddsModern HistoryNative AmericansTourismGardensPrisonMoreNat Geo Channel0:30Promo9 April 2019