Turtle-shaped? Octagonal? Have you ever seen these mysterious "Eastern Castles"?

Editor︰Ryu

For five thousand years, China has left various historic marks on its vast land, among which the abandoned ancient citadels are the key witnesses of every dynasty and every era.

When it comes to ancient cities, most people would think of them as in square shape, but it turns out that they can be polygonal, or even in the shape of an animal!

These strange ancient cities are hidden in the mysterious Gansu Desert...

The ancient city of Bajiao was first built in the Han Dynasty, two thousand years ago. When viewed from above, the city is in the shape of a hollow cross with eight corners, hence its name. (Image Source: VCG)
The distance between the eight corners of the city was within the effective range of the crossbow, so the archers were able to take care of each other and provide sufficient defence protection. (Image Source: VCG)
During the Han Dynasty, the ancient city of Bajiao was once a county town on the southern route of the Silk Road. During the Tang and Song dynasties, it was an important military fortress. (Image Source: VCG)

The ancient city of Bajiao Ancient City (八角古城) and the Yongtai Ancient City (永泰古城) in Gansu Province are two of the most amazing ancient cities in China.

The ancient city of Bajiao was firstly built in the Han Dynasty, with a history of 2,000 years. Unlike the common square walled ancient cities, the ancient city of Bajiao is in the shape of a hollow cross with eight corners, from which it gets the name "Bajiao" which means eight corners in Chinese.

The Yongtai Ancient City, which was built in the Ming Dynasty, looks like a huge "turtle" lying on the ground. Therefore, it is also called the "Turtle-shaped Yongtai City" (永泰龜城).

The Yongtai ancient city was built as a military fortress during the Ming Dynasty to defend against the invasion of nomadic peoples from the north. (Image Source: VCG)
Nowadays, there are only about 30 families left living in the Yongtai Old Town, and they all mainly rely on herding. (Image Source: VCG)
From a bird's eye view of the Yongtai ancient City, the fortress looks like a huge "turtle" lying on the ground, which is very unique. (Image Source: XiaoHongShu)

In ancient times, these two places served as military fortresses. The unique layout of the city walls could resist invasions, providing effective protection.

As time passes, the ancient town of Bajiao and the Yongtai ancient city have lost their military functions and have become natural villages.

Currently, residents still live in these two ancient cities, leading a simple life based mainly on livestock farming.

Occasionally, tourists visit for its reputation, to experience the simple and primitive local culture, and they have become a secluded secret place in the desert of Gansu.

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