1. Narrowest House in the World
Keret House is a structure and art installation in Warsaw, Poland. It was designed by the architect Jakub Szczęsny through the architecture firm Centrala and has been described as the narrowest house in the world, measuring 92 centimeters (3.02 ft) at its thinnest point and 152 centimeters (4.99 ft) at its widest. The iron structure contains two floors and has one bedroom, a kitchen, a bathroom, and a living area. It has two non-opening windows, with sunlight also entering through translucent glass panels that make up the walls. The entire interior is painted white and the building’s electricity is obtained from a neighboring building. In 2019, it was named one of the most iconic houses in the world and included on a list of international projects honored by the architecture portal Iconic Houses.