Look on my works ye mighty and despair.
If you don’t already know this one you’ve absolutely got to Google the whole poem: Ozymandias by Shelley. Ozymandias was the ancient Greek name for Egyptian pharaoh Ramesses II. The massive statue of Ozymandias had been broken with the title words surviving on a plaque. Musing on the remains, Shelley considered the ravages of time and how all great figures of history, along with their empires, eventually fall into decay and oblivion.