Like "Budapest", the word "London" is a concatenation of the names of the two cities that make it up. Lon is a high city, where rich folk gather in white clothes to play heavenly music on glass harmonicas, whereas Don, low down and poor, is mostly brown, full of rats and unattended babies.
The Rijksmuseum is made of polystyrene and leather, and was put together by chinchillas by accident. Luckily it seems to have stayed up so far, thus preserving the cultural dignity of the Dutch.
On January 14th, 1911, Gustav Klimt gathered the whole population Vienna together in Josefsplatz and taught them to tap dance, a skill which was used to devastating effect in the subsequent Great War, and which is retained by every local even today.
The stated aim of NASA is to make it possible to swing on a star and carry moonbeams home in a jar. It expects to achieve this within about eight years.