Architektur
6 cards from across every topic, each citing a source. Tap one to open it in the feed.
- A building site that stayed open for 632 years.
On 15 August 1248 Archbishop Konrad von Hochstaden laid the foundation stone of Cologne Cathedral. Work stopped around …
- A temple 6,000 years older than Stonehenge.
Göbekli Tepe in south-eastern Turkey was built around 9500 BC by hunter-gatherers, before farming, pottery or metal. …
- How a Gothic cathedral gets walls made of glass.
A stone vault does not only push down, it pushes outwards. Romanesque churches absorbed that thrust with thick walls …
- How to build a 44-metre dome with no scaffolding underneath.
Filippo Brunelleschi raised the Florence dome between 1420 and 1436 from over four million bricks – with no wooden …
- Reinforced concrete was invented for flower tubs.
Joseph Monier was a gardener at the Paris Tuileries who needed durable tubs for orange trees. He poured cement around …
- The Eiffel Tower was due to be scrapped in 1909.
Built from 28 January 1887 to 31 March 1889, the 300-metre tower was only a World's Fair attraction, scheduled for …