The Gaul city Alesia, which was defended by Vercingetorix, was besieged by the Roman forces of Julius Caesar in 52 BC.
In the battle fought at the shores of Hellas, Octavian won a decisive victory over Marcus Antonius.
One of the most important parts of a medieval castle was the Knights´ hall.
Medieval knights were vassals of feudal lords and fought on horseback in battles.
One of the main units of Matthias Corvinus´ Black Army was the cavalry.
The Roman army, led by Flavius Aetius, stopped the Hun invasion led by king Attila
The protective embankment, or, in case of minor floods, the summer dyke ensures the protection against flood damage.
Colourless, odourless gas, highly toxic to humans and animals in high concentration.
Television, invented in the early 20th century, became one of the basic forms of entertainment.
German sordiers in the First World War were well trained and used modern weapons.
The surface of a sphere consists of the set of points which are all at the same distance from a given point in space.
Egyptian Pharaohs were respected as gods, they were lords of life and death.
Calculating the volume of a sphere is possible using an appropriate cylinder and cone.
The Mir Castle Complex, situated in the town of Mir, Belarus was built in the Gothic-Renaissance style.
Subterranean rodents widespread in Central- and Eastern Europe.
A transitional form between fish and tetrapods, or four-limbed vertebrates.
Several European countries joined the conquest of the New World, making America a colourful continent.
The dreaded warriors of the Mongol Empire helped to make it one of the largest empires in history.
Pollen serves to fertilise the egg of plants. Pollen grains come in a variety of shapes and sizes, characteristic of the species.
This animation demonstrates how sonar works.