Phaya Thai Palace

Commissioned by King Chulalongkorn (Rama V) in 1909, the complex was later redesigned and expanded with new halls and European-inspired architectural features that blend Romanesque, Gothic, and Art Nouveau styles. Over the years, the palace has had multiple roles beyond the royal residence: it was converted into Thailand’s first international hotel, hosted Thailand’s first radio broadcast station, and eventually became part of the Phramongkutklao Hospital complex. Today Phaya Thai Palace stands as a museum and cultural site preserving a compelling chapter of Thai royal and national history, reflecting shifts in governance, technology, and cultural exchange in early 20th-century Siam.

In recognition of its outstanding preservation and historical value, Phaya Thai Palace has received prestigious accolades for its conservation efforts. Notably, it was honored with the Architectural Conservation Award from the Association of Siamese Architects (ASA) in 1984, highlighting the success of public and private sectors in maintaining its structural integrity. While often discussed alongside UNESCO-recognized sites in Thailand, its management and restoration have been closely overseen by the Department of Fine Arts.

Bang Khun Phrom Palace

Originally built in 1901–1906 on the order of King Chulalongkorn (Rama V), the complex consists of two key buildings: Tamnak Yai, the main residence designed by Italian architect Mario Tamagno in neo-Baroque/Rococo style, and Tamnak Somdet, the river-facing residence designed in German Art Nouveau style. After the 1932 political upheaval, the palace transitioned from royal home to government use. Today, it is a prestigious museum that preserves the nation’s royal heritage. Its varied architectural styles and preserved interiors reflect Western and Thai cultural exchanges in early 20th-century Siam, while its history embodies dramatic shifts in Thailand’s political and social landscape.

Bang Khun Phrom Palace is highly regarded for its meticulous preservation and commitment to heritage standards. It was officially honored with the Architectural Conservation Award from the Association of Siamese Architects (ASA) in 1993, a testament to the Bank of Thailand's successful efforts in maintaining the structural and artistic integrity of the site. Furthermore, the palace is a registered Ancient Monument under the Department of Fine Arts, ensuring its protection as a national treasure.

While the main palace itself is a domestic award winner, the adjacent Devavesm Palace within the same Bank of Thailand compound received an Honorable Mention from the UNESCO Asia-Pacific Awards for Cultural Heritage Conservation in 2005, reflecting the global standard of conservation practiced across the entire riverside estate.