The protective embankment, or, in case of minor floods, the summer dike ensures the protection against flood damage.
Burj Al Arab, the world's only seven-star luxury hotel is located in the United Arab Emirates.
This animation demonstrates the structure of water towers.
Groups of western jackdaws are frequently found in cities. Konrad Lorenz analysed the complex social behaviour of these animals.
Change of light conditions in different seasons. Measuring height using shadows.
During World War I, Britain was part of the military alliance called the ´Triple Entente´.
The surface of a sphere consists of the set of points which are all at the same distance from a given point in space.
Alkanes are saturated hydrocarbons which can be organized into a homologous series.
The Rietveld Schröder House, located in the town of Utrecht in the Netherlands, can be considered a forerunner of modern houses.
The excellent archers were feared members of the Persian army
The iron lattice tower, erected for the 1889 World Fair, became the symbol of the capital city of France.
Three-dimensional assembly puzzle with solutions.
Plants are capable of converting inorganic substances (carbon dioxide and water) into organic sugar.
A legendary fighter plane used by the German air force in World War II.
In 1946 a Hungarian scientist was the first person to detect radar echoes from the Moon.
The castle of Eger got its final shape and became an important component in the new chain of border forts in the 16th century.
The animation shows the forms of government and official languages of the world´s countries.
Market towns became the most common type of towns in the Kingdom of Hungary by the Late Middle Ages.
Tanks developed in the mid-1910s quickly became the most important weapons of land-based military operations.
This animation demonstrates the structure and operation of impulse turbines.