Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
All images by Matt Brown, except Watkin's Folly (obviously), which is public domain.
Source: https://londonist.com/london/best-of-london/london-s-greatest-follies