Leaning Tower of Pisa (14th century)

The medieval bell tower of the Cathedral of Pisa is the most famous leaning tower of the world.

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Traditional Arab house

So many cultures, so many customs. Let’s take a look at what an Arab house used to look like...

Clothing (Western Europe, 5-10th century)

Clothing reflects the lifestyle and culture of the region's inhabitants.

Leonardo da Vinci’s inventions - Armoured car

The design for the armoured car features the most important military requirements: reliability,...

Leonardo da Vinci’s inventions - War machines

Leonardo also designed a wide variety of artillery weapons.

Leonardo da Vinci’s inventions - Aerial screw (around 1489)

The polymath thought that if a screw-like structure can rotate fast enough, it will 'drill' into...

Leonardo da Vinci’s inventions - Siege engines

Leonardo was not only a master artist, but also an accomplished military engineer.

Leonardo da Vinci’s inventions - Flapping wing (1487–1489)

Leonardo based the design of the flapping wing on birds' wings and a faulty hypothesis.

The Madara rider

A rock relief located in Northeast Bulgaria, probably carved at the end of the 7th century.

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