Our favourite of Ærøskøbing’s museums, half-timbered Hammerichs Hus is the most gnarled, creaky hobbit-hole of a home imaginable (mind your head). Its snug interior is full of antiques collected by sculptor Gunnar Hammerich: most impressive are the walls, lined with around 3000 beautiful 17th- and 18th-century Dutch tiles.
It's not open long hours, but staff at the nearby Æro Museum will open it for you during their opening hours.