On the western banks of the Chao Phraya River lies Thonburi, a district often overshadowed by Bangkok’s modern skyline yet deeply rooted in the nation’s history. Once the capital of Siam during a critical period of recovery and reunification, Thonburi played a defining role in shaping what Thailand would become. Today, traces of that era remain woven into its canals, temples, and riverside communities. While the city across the river races forward, Thonburi moves at a gentler pace, offering a rare opportunity to experience Bangkok through a more historical and contemplative lens — one where the past still quietly shapes the present.
As the sun dips out of view, a traditional longtail boat chunters along a narrow canal, gliding past chatting monks, a small street market, and the grand remains of a brief yet crucial kingdom. My wife and I are wandering along the Thonburi side of the Chao Phraya River. Across the water, the forest of skyscrapers, shopping malls, and expressways marks modern Bangkok’s downtown skyline.
Much of what stands there today might not exist were it not for Thonburi and its formidable ruler, King Taksin. The ancient temple, fort and palace we have just explored are vestiges of his Thonburi Kingdom, which lasted only 15 years yet decisively shaped the direction of Siam – the country known as Thailand since 1939.
Bangkok has been the nation’s capital since 1782, when it took that title from Thonburi. Today, however, Thonburi is greatly overshadowed – not only by Bangkok, one of the world’s most visited cities, but also by the former capitals of Ayutthaya and Sukhothai, whose atmospheric ruins continue to draw international visitors.
Ayutthaya still bears the scars of 1767, when Siam was fighting for its survival. That year, Burmese forces attacked the walled capital, leaving Ayutthaya looted, abandoned, and in ruins. The kingdom was left fractured – without a functioning capital, its monarch imprisoned, and its people living in uncertainty. Into this vacuum stepped a 33-year-old military leader named Taksin. He led a successful resistance against the Burmese, established a new capital at Thonburi, and oversaw the kingdom’s reunification.
Thonburi served as the capital from 1767 to 1782 and remained administratively separate until 1972, when it merged with Phra Nakhon to form the Bangkok Metropolitan Administration. Today, renewed efforts to promote heritage tourism have brought greater attention to the area, leading visitors through Thonburi’s royal vestiges and historic temples. Now, the name Thonburi is less associated with its former kingdom than with the western side of the Chao Phraya River. Compared to the gleaming high-rises across the water, parts of Thonburi retain a slower rhythm. When I first visited Thailand in the 1990s, exploring its tree-lined canals felt like stepping back in time. Longtail boats navigated the khlongs (canals) past riverfront temples, floating markets, and stilted wooden homes.
