Great Pyramid of Giza

The  is a funerary building of the Egyptian civilisation, once considered one of the Seven Wonders of the Ancient World.

At the time of its erection, its surroundings were the likely set of an engangement between the First Doctor, the Monk and the Daleks. (TV: The Daleks' Master Plan)

Napoléon Bonaparte visited the Great Pyramid in 1798. (PROSE: The Sands of Time)

It was the place where the timey-wimey distress beacon was built by River Song in an alternate timeline where all of history occurred at once. The timeline came into being because she refused to kill the Eleventh Doctor. The King's Chamber was where they had Madame Kovarian tied up. River was married to the Doctor on the top of the pyramid and she kissed him -- actually the Teselecta -- reverting the timeline. (TV: The Wedding of River Song)