Make yourself at home

The best builder award goes to an igloo in Canada

Enormous fortress: a castle in Germany

Captain of the lake: a stilt house in Cambodia

Tower of computers: a skyscaper in New York, U.S.

Swaying with the squawkers: a tree house in Vanuatu

Dancing houses: a windmill in the Netherlands

Quiet and calm: a siheyuan in Beijing, China

Bobbing beds: a narrowboat in London, U.K.

Cool as a cucumber: cave houses in Tunisia

Moving across mountains: a ger in Mongolia.