Amsterdam Nieuw-West is a borough (stadsdeel) comprising the most western neighborhoods of the city of Amsterdam, Netherlands. The borough was created in 2010 after a merger of the former boroughs Osdorp, Geuzenveld-Slotermeer and Slotervaart. In 2013, the borough had almost 142,000 inhabitants. Most of the residential neighborhoods of Amsterdam Nieuw-West were built after 1950 under an urban expansion plan, based on the garden city concept. Centrally located within the borough is Sloterplas lake and the Sloterpark.
Nieuw-West ('New West') is a sprawling, high-density suburban residential area in the west of Amsterdam. It is situated on the territory of the former municipality of Sloten, Amsterdam, a town dating back to 1063 which has become part of the borough. The plans for the western expansion of the city date back to 1935, when the Algemeen Uitbreidingsplan ('General Expansion Plan') was adopted.
The neighborhoods in Nieuw-West are designed on the basis of the garden city principles: planned, self-contained communities surrounded by greenbelts. Most of these neighborhoods, known as the Westelijke Tuinsteden ('Western Garden Cities') were built in the 1950s and 1960s. At the heart of the borough is Sloterplas, a lake, surrounded by a large park, Sloterpark. The lake was created as a result of sand extractions needed for the development of the garden city neighborhoods.