What are the '7 wonders' of your world?

The Violence of the Baherch : A battle between two clans of the Baherche tribes was cursed by the mother of a slain warrior. Her curse trapped the battle to repeat until the end of time. The warriors do not know they have been fighting for centuries. They just wake up each morning, slaughter the enemy, and sleep, only to wake up and do it all over again. But people outside the battlefield can see and comprehend it. No messages can be sent into the cursed area of the battlefield, and nobody has been able to lift the curse. It used to be a curiosity and a tourist attraction once. However, it was discovered that the battlefield emanated vast quantities of energy. It is now used to supply the electrical needs of several nearby cities and industrial zones.

Graveyard of the Great Arrows : After the development of flight, it was inevitable that an attempt would be made to build rockets. It was a popular notion that the heavens were infinite. The spectacularly wealthy Ospi Yaenza funded several such attempts to break through the skies, but all these rockets hit the Floor of Heaven, and crashed back onto the world. Infuriated, he build bankrupted himself building hundreds more, hoping that perhaps the stars were gaps in the Floor. He launched them all at once. They failed as well and fell upon his estate causing an explosion that resulted in a crater. All attempts to breach the skies were abandoned afterwards, but the tremendous crater, littered with the relics of Yaenza's ambition is still perceived as a remnant of a brave, albeit foolish man's ambition.

Prasan Carcass : The port of Prasa was once the seat of a powerful naval empire ruled by a god. Prasa grew prosperous under his rule. The god ensured consistent rainfall, good weather, and a limitless supply of fish. But he became arrogant and tried to manipulate the moonblood of Prasa's women. The infuriated Prasai assassinated the god. They were preparing a great funeral that would restore the carcass to Heaven, but a rogue cannibal ate the dead god's liver, corrupting the funeral. Consequently, the carcass remained in the center of Prasa, growing larger as it decayed slowly. It consumed all of Prasa. It is now the size of a mountain, horribly decayed and visceral. It has also become a favored site for many imperial tomb complexes.

Sefshatec's Song : Composed by the artist Sefshatec, the Song is now nearly ten millions lines long. New lines and rhymes have been added to it every generation, and an entire school of memory has been conceived just to memorize the ever expanding song verbatim. It is studied by anthropologists to gain valuable insights into the culture of their ancestors.

The Tapestry : A remnant of the extinct faith of the Determinists. More than a thousand years in the past, a man calling himself a messiah created a massive tapestry depicting events leading up to his eventual birth a thousand years later. He told his followers to ensure that the world adhered to the prophecies that he had depicted on the Tapestry, or he would never be born. This Determinist faith grew in power and influence over the centuries. They suffered through periods of inadherence, when the world strayed far from the prophecies, but through force of will and violence, they forced the world to adhere. By the time the Messiah's birth was close, the world nearly matched what the Tapestry said it would. Unfortunately for the Determinists, the actual birth was a failure. The messiah was stillborn. After a bloody civil war, the empire of the Determinists broke apart and died away.

/r/worldbuilding Thread