Narrowest house
Jakub Szczęsny
Poland (Warsaw)

The narrowest house in the world is the Keret House in Warsaw, Poland, designed by Jakub Szczęsny of Polish architects Centrala. Completed in 2012, the tiny raised residence measures just 92 cm (3.02 ft) at its narrowest and 152 cm (4.99 ft) at its widest, with a total floor area of 14 m² (151 ft²). Despite its miniscule two-storey layout, it squeezes in a bedroom with separate kitchen and bathroom, connected by a ladder instead of the normal staircase.

The house is named after Israeli writer and filmmaker Etgar Keret, who led the commission for the house and was its first resident. The steel frame structure is squeezed between two existing buildings at 22 Chłodna Street and 74 Żelazna Street, and is officially designated as an art installation because it does not meet local Warsaw building regulations. There only two spaces at the dining table, a fridge that can only hold two drinks, and no openable windows.