Keret House

Warsaw's Keret House is built
in a 1.2m gap between two buildings.
The narrow gap is between a pre-war apartment building
and an 11-storey postwar co-op.

Keret House is designed by Polish architect Jakub Szczesny
and named after Israeli author Etgar Keret.
At just 1.2m across at its widest,
and a mere 0.7m at its narrowest point,
it may be the world's thinnest home.

By Polish law, Keret House is too small to be a residence.
It has been classified as an art installation,
to be owned and administered by the Polish Modern Art Foundation.