Between the 12th and 14th centuries, a massive fortification was undertaken in the city and around it.

Its massive fortifications, which were considered state of the art until the modern age, are also largely intact.

Remains of the foundation reveal the massive fortification of the structure.

The monastery is still surrounded by the massive fortifications that have preserved it.

Now, the massive fortifications and battlements are seen in ruins only.

Why were such massive fortifications built so close to each other?

Gardens and parks complement these massive fortifications, the last major city walls standing intact in China.

The massive concrete fortifications with eight cannon batteries was built to protect the city and its population from German attacks.

He has the strength of two legions in those camps, well entrenched behind massive fortifications.

Such massive fortification is considered unique in citadel construction.