Keret House, located on the corner of Chłodna 22 and Żelazna 74 streets in Warsaw, was opened on 27th October 2012. The house Jakub Szczęsny designed for Keret has a floor area of 14 m2 and measures 122 cm at its widest point and 72 cm at its narrowest which makes it the narrowest house in the world. Inside there is everything a home should have: a living room with a pouffe, a desk, a cooker, and a toilet and shower. To reach the second floor where the bed and 90-centimetre desk are located one has to climb a ladder.