The world's longest and deepest rail tunnel is the Gotthard tunnel and the rail track is 57 km/ 35 miles long.
The deepest lake of Switzerland is the Lago Maggiore in the southern part of Switzerland.
The glacier is about 23 km/ 14 miles but shrinking every year. See here a 3D model of the shrinking Aletsch glacier.
The Swiss Aletsch Glacier is the longest glacier in Europe.
Switzerland has the highest mountains in Europe. 48 of the mountains are over 4,000 meters/ 13,120 feet high.
The largest lake is called Lake Paravani.
The longest river is the Mtkvari River with 1 364 km/ 847 miles.
Shkhara is the highest mountain peak of Georgia with 5 193 m/ 17 040 ft in height.
The Dubai Creek is best explored on a dhow cruise or on a traditional abra, the traditional commuter taxi.
Burj al-Arab is known for its architecture as the building does resemble a huge sail.
Dubai Mall is known to have the world's largest collection of fashion brands under one roof!
Dubai is home to the world's tallest building, the Burj Khalifa with 829 m/ 2,722 ft in height.