A small, surprisingly scholarly museum dedicated to the penises of every mammal species in Iceland — whales, seals, foxes, sheep, mice, the lot. Roughly 280 specimens are on display in jars and on plaques, with bilingual labels that give the species, the length, and the curator's wry comments.
It sounds like a one-joke attraction and it half is, but the museum is well-curated, has a sense of humour about itself, and is a popular stop for anyone with an hour to fill before the Flybus. Admission around 2,500 ISK.