North of the ancient city Persepolis in Iran is a weird cliff named Naqsh-i-Rustam located. The construction of the cliff is amazing, and it’s weird that people way back then actually succeeded in shaping it that way. It has massive doors that goes right into the walls of the cliff. It’s a total of 4 entrances that are shaped as giant crosses also known as Persian Crosses.
They are perfectly carved into the walls. Inside the entrances you will find a small camber where the king would be in his sarcophagus, but now it is empty of course. The cliff is also known as the Persian Empire and its rulers were Xerxes, Darius and Cyrus.