10 Trinity Square

10 Trinity Square
10 Trinity Square
10 Trinity Square
Location in central London
Location in central London
Location in central London
Alternative names(Former) Port of London Authority Building
General information
TypeCommercial
Architectural styleBeaux Arts
Address10 Trinity Square
Town or cityLondon, EC3
CountryEngland, United Kingdom
Coordinates51°30′36″N 0°04′41″W / 51.5101°N 0.07801°W / 51.5101; -0.07801
Current tenantsFour Seasons Hotels and Resorts
Opened1922
ClientPort of London Authority
OwnerReignwood
Design and construction
Architect(s)Edwin Cooper
Main contractorJohn Mowlem & Co
DesignationsGrade II* listed building
Website
www.fourseasons.com/tentrinity/

10 Trinity Square is a Grade II* listed building in London, United Kingdom, overlooking the River Thames at Tower Hill, in the southeastern corner of the City of London. Built in the Beaux Arts style, it is best known as the former headquarters of the Port of London Authority and is thus also sometimes referred to as the Port of London Authority Building.

Since 2017, it has been operating as the Four Seasons Hotel London at Ten Trinity Square.