The Canadian helicopter is one of the most widely used helicopters in the world.
Colouring the vertices, edges and faces of a given cube according to the criteria specified in the exercise.
The geographical distribution of major (world) religions has been influenced by historical events.
This animation demonstrates the structure of water towers.
Competing with each other in the 19th and 20th centuries, the world´s most powerful nations made great efforts to develop effective firearms.
The battle, that is considered to be a tactical masterpiece, meant a decisive victory for Alexander the Great against Persia.
The Altar of Peace, commissioned during the reign of Augustus, was one of the most important works of ancient Roman art.
A Zeppelin is a type of controllable, rigid airship.
The most popular European-made transport aircraft before World War II.
The Ironsides were members of the Parliamentarian cavalry formed by Oliver Cromwell during the English Civil War.
In 1946 a Hungarian scientist was the first person to detect radar echoes from the Moon.
Ancient Greek heavy infantryman.
The efficient reconnaissance aircraft has been used by the CIA since the Cold War.
The B-2 Spirit heavy stealth bomber was deployed in the Balkan war, Afghanistan and Iraq.
Tanks developed in the mid-1910s quickly became the most important weapons of land-based military operations.
A legendary fighter plane used by the German air force in World War II.
The Arch of Triumph was built at the entrance of the Forum Romanum, to commemorate Emperor Titus’ victory in the Siege of Jerusalem.
The iron lattice tower, erected for the 1889 World Fair, became the symbol of the capital city of France.
A floatplane (sometimes called hydroplane) is an aircraft capable of taking off not only dry land, but water too.
Burj Al Arab, the world's only seven-star luxury hotel is located in the United Arab Emirates.