2.
Ishtar Gate
You can find this gorgeous gate in Iraq. The gate is one of the eight gates of the inner city of Babylon, the capital of the Babylonian Empire 575 BC. It was created by Nebuchadnezzar 2.
It is adorned with dragons, lions, bulls, and was dedicated to the goddess Ishtar. If you do not want to travel to Iraq you can visit the Pergamon Museum in Berlin where they have reconstructed a gateway from the glazed bricks that were found.