A dollhouse or doll's house is a toy house made in miniature. Since the early 20th century dollhouses have primarily been the domain of children, but their collection and crafting is also a hobby for many adults. English-speakers in North America commonly use the term dollhouse, but in the United Kingdom and other English-speaking countries the term is doll's house (or, less commonly, dolls' house). They are often built to put dolls in.