The towers of the former World Trade Center, which were destroyed on September 11, 2001.
Green area: 31×31 blocks
Height: Ground floor (8 blocks) + 24 floors of 5 blocks each + roof (1 block) = 129 blocks high
Material: Iron blocks, black window panes, stone brick staircase, iron doors, pressure plates, glowstone.
Server IP: PN to me