1.Underwater City

The 'Underwater City' in Bulgaria is the same revolutionary city that the water level is 'built in the middle of the lake, not on an island, but actually at the bottom'. In fact, the city is not completely under water, large dams (1377 diameter and 65 feet in height) around the city, there may be accessed via water transport.

The 'Underwater City' in Bulgaria is the same revolutionary city that the water level is 'built in the middle of the lake, not on an island, but actually at the bottom'. In fact, the city is not completely under water, large dams (1377 diameter and 65 feet in height) around the city, there may be accessed via water transport.