Anantara Siam Bangkok is embarking on a US$50 million enhancement project focused on cultural storytelling, sensory rituals, and guest immersion, aiming to reaffirm its role as a cultural landmark in Thailand.
Opened in 1983 in Bangkok’s Ratchadamri district and designed by George Wimberley, the hotel is known for its murals, garden courtyards, and Thai hospitality. The upgrade, guided by Transformed. Timeless. Thai. concept, will blend contemporary design with heritage.

The renovation will occur in two phases to avoid guest disruption. Phase one, until November 2025, covers Montathip and Kannika Court rooms, Garden Terrace Rooms, Kasara Lounge, pool, fitness centre, and select meeting spaces. Phase two, from May to September 2026, includes Garden Pool Villas, Parichart Court rooms, Spice Market restaurant, Kids’ Club, lobby, ballroom, and remaining event spaces.
Dining and upper-level functions remain open throughout.
New features include a redesigned lobby, Kasara Lounge, Jim Thompson Suite showcasing Thai silk, six Garden Suites with private plunge pools, a landscaped pool area, and a wellness centre with advanced equipment.
Cultural immersion is key, with daily programming offering alms-giving, cultural storytelling, and Thai botanical cocktail hours. Guests can also join spiritual ceremonies, mask-making workshops, and cooking classes, alongside subtle cultural touches throughout the hotel.
During renovations, service continues uninterrupted. Kasara guests will receive dining credits and minibar upgrades. Spa treatments will move to converted suites, and guests will also have access to The St Regis Bangkok’s wellness and pool facilities nearby, with staff assistance.
“This transformation marks a defining moment in Anantara Siam’s journey,” said Torsten Richter, general manager, Anantara Siam Bangkok Hotel. “For nearly five decades, this hotel has been a symbol of classic Thai luxury and cultural refinement. Iconic hotels must strike a balance – remaining relevant to the expectations of today’s traveller while protecting and preserving their heritage. Our discerning clientele, who value first-class quality and immersive experiences, expect nothing less than the extraordinary, and it is our responsibility to continually exceed those expectations.”
He continued: “We believe there is still extraordinary growth potential in Bangkok’s luxury hospitality segment. Anantara Siam has long played a vital role in anchoring the heart of the capital – not just for international visitors, but for our local community as well. We look forward to continuing that legacy, and to delivering a new era of unforgettable experiences that only Anantara Siam can provide.”







