The Ishtar Gate from Assyria 575 BC

This is the piece I like the best. Get a load of the animal tiles: bulls and a fabulous creature equal parts lion, cobra, eagle and scorpion.
This is only the lower entryway. This museum isn't big enough to house the full sized double gate, if they been able to find all the pieces, that is. Fortunately, they know what it looked like as someone found a necklace that had a picture of the gate on it.
It's a reconstruction, with blue ceramic tiles made to match the bits found.