You can find such buildings in big cities where real estate is prohibitively expensive or there is not enough space. To live in a house so narrow would not be very pleasant and definitely not for claustrophobics.
River Side House in Horinouchi, Tokyo by Mizuishi Architect Atelier
Al Dar Headquarters, Abu Dhabi
Piers have been built for several purposes, and because these different purposes have distinct regional variances the term is principally associated with the image of a Victorian cast iron pleasure pier. However, the earliest piers predate the Victorian age and were of wooden construction. Providing a walkway out to sea, pleasure piers often include amusements and theaters as part of the attraction. Such a pier may be open air or partly open, partly closed.
Sellin Pier in the Baltic seaside on the German island of Rügen. The original pier was 500 meters long and was built in 1925.
Photo credit: Raico Bernardino Rosenberg/Flickr
A spite house is a building constructed or modified to irritate neighbors or any party with land stakes. Spite houses may create obstructions, such as blocking out light or blocking access to neighboring buildings or can be just symbols of defiance. Because long-term occupation is at best a secondary consideration, spite houses frequently sport strange and impractical structures.
More info wikipedia
Rakotzbrücke (also called the Devil’s Bridge) is nestled in Azalea and Rhododendron Park, Kromlau, Germany. The bridge dates back to 1860s. Rakotzbrücke was specially built to create a circle when it is reflected in the waters beneath it – a popular photo opp. The bridge’s artificially-formed basalt columns were specially shipped from distant quarries.
Dan Pauly is rooted in a heritage of 4 generations of wood-working artisans. The Minnesota-based craftsman builds tiny whimsical homes with slanted roofs and crooked chimneys. Each Fairy tale structure is a unique masterpiece made from reclaimed wood from barns and other buildings over 100 years old using old-world techniques. With meticulous attention to detail, each structure is custom made to suit individual needs and make your vision a reality.
Website: The Rustic Way
Situated on a hill overlooking Atami, Japan, the most striking feature of the villa is the oval glass dinning room which sits like an island in the middle of a pool on o huge granite block cantilevered out over the hill. The oval dinning room is connected to the rest of the house by a glass corridor. By Kengo Kuma