Grand Postal Building

Why it matters

The Grand Postal Building was Bangkok’s central post office, built on the former British Legation site and officially opened on 24 June 1940. It handled mail and sorting alongside telegraph, radio and international telephone functions. Its Charoen Krung location linked road traffic with the nearby river, then a working transport route.

The building remains one of the clearest statements of Thailand’s early modern public architecture. It was designed by Jitrsean (Mui) Aphaiwong with Sarot Sukkhayang, using a stripped, monumental language associated with Art Deco and International Style architecture.

Read the façade

Start from the pavement opposite the forecourt. The long, low-slung front is rigorously symmetrical: repeated vertical bays, recessed windows, a flat roofline and almost no applied decoration.

Look closely at the central section:

• Garudas: monumental sculptures at the upper corners of the entrance give the austere façade a distinctly Thai state symbol.
• Central hall: the formal entrance leads to the former public postal hall.
• Brick-pattern rendering: the exterior’s scored surface creates a stone-like, geometric texture rather than a decorative façade.

The building is T-shaped and constructed with reinforced concrete and masonry walls. Its scale was deliberate: this was national communications infrastructure, not a neighbourhood post office.

Inside today

A Thailand Post branch still operates here. Parts of the former public hall have been used for rotating postal exhibitions and public programmes.

Since 2017, much of the building has housed the Thailand Creative & Design Center (TCDC). Its public-facing facilities include exhibition areas and design-focused resources; access to the resource centre and other facilities can be subject to membership, day-pass or programme conditions. Treat the exterior as the reliable core of a visit, and consider interior displays a useful addition when open.

Getting there

The address is 1160 Charoen Krung Road, Bang Rak. The building sits on the historic Charoen Krung corridor, a practical stop while walking between Si Phraya and the older riverside streets.

• By river: Si Phraya Pier is the closest useful river stop; continue on foot along Charoen Krung.
• By BTS: Saphan Taksin is the nearest Skytrain station, followed by a walk or short taxi ride.
• By taxi: use “Grand Postal Building” or “Bang Rak General Post Office”; the façade and forecourt are unmistakable on arrival.

Visit notes

Allow 20–30 minutes for the exterior, forecourt and entrance details; add time if TCDC exhibitions are open. The building is an active workplace and cultural venue, not a museum with universal access. Keep clear of service counters and event setup, and do not assume that every interior or rooftop area is open to casual visitors.