Portman Square is a garden square in Marylebone, central London, surrounded by townhouses. It was specifically for private housing let on long leases having a ground rent by the Portman Estate, which owns the private communal gardens. It marks the western end of Wigmore Street, which connects it to Cavendish Square to the east.
Location: London
Length: 530 ft (160 m)
Width: 400 feet (120 m)
Area: Marylebone
Construction start: 1765
Completion: 1784; (241 years ago)
Status: west end of the north side: · large building: · Grade I listed