London, England (1st and 2nd images, other skinny houses in Amsterdam and Long Beach, California, U.S.A.)
Located in the Shepherd's Bush neighborhood, this 5-level home has a kitchen, dining area, living room, spiral staircase, shower room, dressing room, patio, small garden, and roof terrace with a panoramic view, and (depending how it's configured) 3 bedrooms.
Madre de Deus, Brazil (5th and 6th images, photos of more skinny houses here and here)
A 3-story single-family dwelling in a town of 12,000 with 2 rooms, kitchen, 3 bedrooms with baths, and a 4th-floor patio with barbecue.
Warsaw, Poland (3rd and 4th images, slideshow here)
This 1-bedroom loft, situated in the crack between 2 buildings and requiring a ladder to get from the work area to he desk space, is a mere 46 sq ft of living space with a bed, desk, tiny kitchen, and bath with shower inspired by boat design. "If you are claustrophobic, don't come here for a game of scrabble or cup of tea,” says occupant, Israeli writer Etgar Keret, of the 2-level 150 sq ft "Keret House," due to be certified as the world's narrowest.