It runs westwards from the Edgware Road, for most of the way as a broad avenue until it reaches an area near Lancaster Gate where it becomes a garden square.
Part of the City of Westminster, it is located in the residential area of Tyburnia north of Hyde Park.
It was laid out as part of the ambitious street plan for Tyburnia in 1809, designed by the architect Samuel Pepys Cockerell.
[2] Delays, partly caused by the Panic of 1825, meant that the street wasn't fully completed until the early Victorian Era to a revised plan by George Gutch.
[5] By the twentieth century, the street had become known for the large number of boarding houses and hotels located on it.