Built in 1925, the walls of the Tri­bune Tow­er con­tain rocks from many famous world land­marks, includ­ing: the Taj Mahal, the Parthenon, the Great Pyra­mid, the Cathe­dral of Notre-Dame, the Great Wall of Chi­na, the Berlin Wall, and most recent­ly from the demol­ished World Trade Cen­ter. The Tri­bune Tow­er even man­aged to get its hands on a moon rock, but so far NASA has­n’t allowed it to add the rock to the wall.