Ramesseum (Temple of Ramses II), Egypt

Immortal in the poems of the English poet Percy Bish Shelley, the temple of Ramses II - Ramesseum, is unique with its four stone statues, all depicting the greatest of all rulers, Pharaoh, who wore the double crown of Egypt for 67 years. 
In its finished form, the Ramesseum Temple consists of a central main temple, surrounded by small temples dedicated to his mother Tuya and his wife Nefertari, palaces, administrative buildings and vaults.
Efforts and funds were not spared, because the cherished goal was clear - to build this greatest of all monuments temple. Later dynasties encroached on greatness and used materials from it to build their own temples. In the early Christian era, Christians also laid their hands on Ramesseum and built their church there. The rest nowadays are only parts of the main entrance of Ramesseum.
In the innermost part of the temple is the most sacred place - the Altar, but the innermost hall of Ramesseum is filled by the altar of the four deities. Thus designed hall, it is the biggest landmark of Ramesseum. Every year on February 22 and October 22, the first rays of the rising sun penetrate the entire length of the interior of the temple to illuminate the back wall of the largest sanctuary and the statues of the four seated deities.
The rock-carved façade of Ramesseum represents the front of the support, in front of which there are four colossal statues of Ramses. Above the cornice is a row of figures of baboons, with their arms raised in honor of the rising sun. The Egyptians believed that baboons helped the god Amon-Ra defeat the darkness, which is why they were considered sacred animals to the victory of the rising sun.
A colossal statue of Ramses in Ramesseum has collapsed today, but that hasn't stopped Egyptologists from examining it and making estimates that it was about six stories high and defining it not only as the most gigantic in Egypt, but perhaps as such among those created in human history.
What makes it even more striking is the material from which it is made - the blocks were taken from the quarries in Aswan and transported about 240 km to be transported to Ramesseum. 
The complex also has the so-called an "Astronomical room" whose ceiling was covered with a celestial calendar of constellations, with the help of which they determined the exact moment for religious ceremonies.