A symbol of division and oppression, the Wall tore a city and numerous families apart.
The B-24 Liberator was an American heavy bomber aircraft, built in large numbers, that was used on every front during World War II.
Neil Armstrong, one of the crew members of Apollo 11 was the first man to set foot on the Moon.
Space probes and Mars rovers examine the structure of Mars and possible traces of life.
This animations demonstrates the exterior and interior construction of cars, as well as their operation.
Learning about the geographic location, capitals and flags of the world´s countries through exercises in three levels of difficulty.
Built in Neo-Byzantine style, this Orthodox cathedral is one of the symbols of the Bulgarian capital city.
Carved into a granite cliff, the sculptures of the Mount Rushmore National Memorial depict four great United States presidents.
Yuri Gagarin became the first human in space on April 12, 1961.
The atomic bomb is one of the most destructive weapons in human history.
A Zeppelin is a type of rigid-framed airship.
The double-decked, wide-bodied passenger aircraft can carry more then 500 passengers.
Located in the Grand Mosque of Makkah, the Kaaba shrine is the most sacred site of Islam.
One of the most modern means of transportation is the Maglev, capable of traveling at speeds of over 400 km/h (248.6 mph).
The popular model of the American automobile factory was the first mass-produced car in the world.
A selection of legendary buildings from the history of civilisation.
The train operates between Paris and southern Germany, its cruise speed is 320 km/h (199 mph).
Nuclear fusion will serve as an environmentally friendly and practically unlimited source of energy.
The first supersonic passenger airliner entered service in 1976.
Soviet labor camps (Gulags) were located far from inhabited areas.