The battle, that is considered to be a tactical masterpiece, meant a decisive victory for Alexander the Great against Persia.
The characteristic colours of the common kingfisher aid the bird in catching its prey.
The castle of Belgrade (Nándorfehérvár) was one of the most important components in the chain of Hungarian border forts.
Rotating a rectangle around its axes of symmetry or around its sides results in solids of revolution.
The masterpiece of Buddhist architecture is located in India.
The Soviet-made satellite was the first spacecraft to be launched into outer space (in October 1957).
Ancient Greek heavy infantryman.
Hovercraft are capable of travelling at high speed above the surface of water.
Caliphs, considered successors of the Prophet Muhammad, were the most important religious leaders of Islam.
The Arch of Triumph was built at the entrance of the Forum Romanum, to commemorate Emperor Titus’ victory in the Siege of Jerusalem.
This animation demonstrates the development of freight transport, from horse-drawn carts to modern lorries.
King Darius as well as Xerxes built pontoon bridges across the Bosphorus for the Persian army.
A colourless, odourless gas, an important component of the atmosphere, indispensable to sustain terrestrial life.
This animation demonstrates the most important seas and bays.
The theorem formulated by Leonhard Euler describes one of the basic properties of convex polyhedra.
This animation presents the current refugee crisis from various points of view.
Influenced by Western Europe, the Tsar attempted to modernise the Russian Empire.
Tall buildings are mementoes of human history and technological development.
According to the Bible Noah was ordered by God to build a large vessel to save his family and the animals from the flood
A game about sights around the world.