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.