Set on the Chao Phraya in Bangkoks historic Bang Rak District. The Langham Custom House Bangkok restores the 1888 Custom House. once Siams gateway to the world. The 75-key riverside retreat houses its rooms and suites in a contemporary new wing with views over the river garden walls or the city skyline and signature suites some with a private pool. The three-Michelin-starred Tang Court leads a collection of restaurants and bars alongside Chuan Wellness. Opening December 2026.