Mercenaries of the ancient Roman army were well-trained and well equipped with the most up-to-date weapons.
This scene summarizes the main organs of the human body.
Icebergs are blocks of frozen freshwater floating in the sea.
The Moon is the Earth's only natural satellite
The ancient Roman arena became well-known for the chariot races held here.
The step pyramid, built in the 27th century BC, was the first pyramid in Egypt.
Today only one of the Wonders of the Ancient World is still intact: the Pyramids of Giza.
Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.
The magnificent bath complex of the Roman Emperor was built in the 3rd century AD.
Human bones are joined together by cartilaginous or synovial joints, sutures or they can fuse together.
This animation demonstrates the structure and operation of electron microscopes.
The double-decked, wide-bodied passenger aircraft can carry more then 500 passengers.
In the Tudor Era around 200 buildings were built on the bridge across the River Thames.
The position and acceleration of the head is detected by the inner ear.
The Parisian prison became legendary after the Revolution of 1789.
The inflammation of the vermiform appendix, which is connected to the cecum, requires immediate surgical intervention. The animation shows the cause and...
The theatre that has a distinctive shape and excellent acoustics was situated at the side of the Acropolis in Athens.
Comets are spectacular celestial bodies orbiting the Sun.
Soviet labour camps (Gulags) were located far from inhabited areas.
Located close to Osaka, the Japanese castle is also called the White Heron because of its white exterior.