The famous Volkonsky dolmen, located in the mountains of Sochi, is several thousand years old. Scientists and ordinary people still argue what the purpose of this object was. Some people are sure of its cult purpose, while others are convinced of the mystical properties of the dolmen. However, the main mystery of the construction is how exactly and with what tools ancient people managed to hollow out a spacious room inside a giant boulder.

Al Naslaa Rock Formation, Saudi Arabia. The mysterious formation in Saudi Arabia puzzles even the most experienced travelers. Not only does this huge sandy rock have almost no point of contact with the ground, but it also has an absolutely even crack that runs through its center, and it seems to be made by a laser. And no one knows what actually happened.

Teotihuacan, or the “birthplace of the gods,” is located very close to the modern capital of Mexico, Mexico City. Currently, only tourists can be found in the ruins of Teotihuacan, but more than 100,000 people used to live in this ancient city.

Italy is famous for its countless architectural monuments, including the majestic Colosseum and the famous Leaning Tower of Pisa. However, there are also not so popular, but no less interesting, tourist attractions in Italy. One of them is the mysterious House of the Fairies (Domus de Janas) in Sardinia, whose tiny size is more suitable for fairies than for humans. Nowadays, it’s believed that these stone “fairytale houses” are about 6,000 years old.

The Kailasa temple at the Ellora Caves is one of the most mysterious and largest constructions on the planet, which was completely carved out of monolithic stone. Modern archaeologists can only guess why the ancient Indians needed to manually raise such a unique structure.

The Temple of Bacchus in Baalbek is a mysterious construction that was built at the beginning of the first millennium ACE. The temple is so big that the famous Parthenon in Athens seems tiny against its backdrop.

In different parts of the Asuka region in Japan, there are unusual carved stones known for having square holes, which were made by the ancient inhabitants of Japan for unknown purposes.