Aouk-Kladuk Underground River

World’s most powerful underground river. Aouk-Kladuk Underground River is some 1.5 kilometres long. The stream has a volume of 130 – 180 cubic meters.

Keek sinkhole

One of the tiankengs of Aouk Underground River. Keek sinkhole is bell-shaped hollow that is some 160-180 m deep, its volume is 1.4 million cubic meters.

Hafasu Tiankeng

One of the tiankengs of Aouk Underground River. Hafasu Tiankeng is some 100 m deep, with a volume of 12 – 15 million cubic meters.

Kuom Tiankeng

One of the tiankengs of Aouk Underground River. Kuom Tiankeng is some 100 – 160 m deep, with a volume of 15 – 20 million cubic meters.

Aouk Underground River

Amazing system of more than 6 km long underground passages with one of the most powerful underground rivers in the world. System has three tiankengs.

Jog Falls (Gersoppa Falls)

The most impressive waterfall in India – Sharavati River here falls 253 meters. Width of the waterfall reaches 580 m during the monsoons – then it is one of the world’s most impressive waterfalls.

Niagara Falls

The most popular waterfall in the world is 51 meters high and 1203 meters wide. The shape of the waterfall and its proportions have become somewhat synonymous with the word “waterfall”.

Archbasilica of St John Lateran

The most important church for Catholics of the world. One of the oldest world’s churches, operating since 318 or 324.

Santa Maria della Salute, Venice

The last and most beautiful “plague church” in Venice. One of the most outstanding Baroque structures, built in 1631-1687.

Pisa Cathedral

An impressive monument of European medieval Romanesque architecture, the cathedral was started in 1063 and rebuilt several times. Next to it, the baptistry was started around 1153 and the construction of the famous leaning bell tower was started in 1173-1372.