The Ishtar Gate was the eighth gate to the inner city of Babylon. It was constructed c. 569 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. From Wikipedia
Visitors have three days to see iconic exhibits like the Ishtar Gate before the next phase of a €1.5 billion restoration begins, set to last until 2037.