Custom House

The Custom House, built between 1813 and 1817 by David Laing, is a significant neo-classical building located on Lower Thames Street. The center of the riverfront was rebuilt in 1825 by Robert Smirke, and the east end underwent reconstruction after World War II, which included alterations to the basements. This large structure is made of Portland stone, featuring a street front of yellow brick with stone dressings and a granite basement from Smirke's rebuilding. It has three main storeys, plus a basement and attic.

The river-facing side showcases three Ionic porticos with six columns, where the outer columns are engaged. The building has straight entablatures and segmentally arched windows on the partly channelled ground storey, with some first-floor windows featuring cornices. A balustrade is present in front of part of the attic, and the simple returns add to its design. The recessed center of the plain street front is adorned with an order of eight Doric pilasters above the channelled ground storey, leading to a triple entrance. There are three lamps on iron brackets and carved royal arms above the entrance, along with plain area railings.

Inside, the space is generally simple, except for the large and severe Long Room designed by Smirke. This room features an order of Doric pilasters on pedestals and a semi-elliptical, panelled ceiling, along with corniced doors and windows.