The work of smiths – one of the first professions in history – became even more important in the Middle Ages.
Medieval Venice owed its wealth to its flourishing maritime trade.
The cannon was an important type of firearms at the beginning of modern history, widespread both on land and water.
The largest type of Arab sailboat, most commonly used as trading vessels in the Persian Gulf.
The suspension bridge that stretches above the strait between San Francisco Bay and the Pacific Ocean was opened in 1937.
A wide variety of torture devices were in use in medieval dungeons.
Typical working-class districts with unhealthy living conditions were built at the time of the Industrial Revolution.
Jamestown, founded in 1607, was the first permanent English settlement on the east coast of North America.
Tower cranes are machines used for lifting loads weighing up to several tonnes.
The device designed to carry out executions more humanely than before was named after a French doctor.
The world-famous limestone cave with its amazing cave paintings is one of the most important archaeological sites of Palaeolithic art.
The Olympic Games, held in the town every 4th year after 776 BC made it one of the centres of ancient Greece.
Archimedes was one of the most brilliant Greek scholars of ancient times, who made his mark with military inventions as well.
Fatty acid molecules consist of a polar head and a non-polar tail, therefore they are suitable for removing fat stains.
The changing bicycle, at first mocked as a toy, is a true mirror of the technical development over the last three centuries.
The main protagonists of World War II were tanks.
The Northern white-breasted hedgehog rolls into a ball to protect itself.
The first dwellings in human history provide a lot of information about the lifestyle of our ancestors.
Hero of Alexandria is the inventor of the first steam engine, although he regarded it as an entertaining toy.
The invention of the ballpoint pen made writing a lot easier.