The Ishtar Gate of Babylon. constructed in about 575 BC, by order of King Nebuchadnezzar II on the north side of the city. It was part of a grand walled processional way leading into the city. The walls were finished in glazed bricks mostly in blue, with animals and deities in low relief at intervals, these also made up of bricks that are moulded and colored differently. It was excavated in the early 20th century, and a reconstruction using original bricks, completed in 1930, is now shown in Berlin's Pergamon Museum.