Dvaravati — roughly 6th–11th century AD

Dvaravati refers to a network of early historic Mon-associated cultural and political centres that flourished particularly in central Thailand from about the 6th to 11th centuries, with related developments extending into parts of north-eastern Thailand. Buddhism was central to Dvaravati culture, alongside Hindu influences, and the culture maintained strong connections with the wider Buddhist world of South and Southeast Asia.

Dvaravati is particularly important for its Buddhist art and architecture, including brick stupas, Buddhist monasteries, distinctive Buddha images and dharmachakra (wheel-of-law) stone carvings. The artistic style is recognisably different from the later Khmer and Sukhothai traditions.

Dvaravati therefore predates both the major expansion of Khmer political and cultural influence into the region and the emergence of Sukhothai. In many areas, Dvaravati traditions were subsequently overlain or absorbed by Khmer political and cultural influences. Sukhothai later emerged in the 13th century from this complex cultural landscape, incorporating elements of both earlier Dvaravati and Khmer traditions while developing a distinctive Siamese/Thai artistic and architectural style.

Khmer — Angkorian influence, roughly 9th–13th century

The Khmer Empire, centred on Angkor, extended its political, religious and cultural influence over large parts of what is now north-eastern and central Thailand. Khmer influence was particularly strong from approximately the 10th to 13th centuries, although individual sites have different dates and political histories.

This period produced some of Thailand’s most distinctive pre-Thai monumental architecture: sandstone and laterite temple complexes, monumental reservoirs and causeways, and the characteristic prang — a tall, tower-like sanctuary derived from Khmer architectural traditions.

Important surviving examples include Phimai, Phanom Rung and Muang Tam. Khmer religious architecture was initially predominantly Hindu, particularly associated with Shiva and Vishnu, although Mahayana Buddhism became important during parts of the Angkorian period. Some Khmer temples were subsequently adapted to Theravada Buddhist use.

Khmer architecture is therefore readily distinguishable from both the earlier Dvaravati tradition and the later Sukhothai and Ayutthaya styles.

Sukhothai — 13th–15th century

Sukhothai is conventionally regarded as the first major kingdom to develop a distinctive Siamese/Thai political, artistic and architectural tradition. The kingdom emerged as an independent polity in the 13th century and reached its greatest influence under King Ramkhamhaeng.

Sukhothai is particularly associated with the development of a distinctive Thai Buddhist artistic style, including the elegant walking Buddha, graceful seated Buddha images and distinctive lotus-bud-shaped chedi.

The kingdom is also traditionally associated with the development of the Thai script. The famous Ramkhamhaeng inscription of 1292 is traditionally regarded as the earliest surviving example of Thai writing, although the historical interpretation and authenticity of the inscription have been debated by scholars.

UNESCO identifies Sukhothai, Si Satchanalai and Kamphaeng Phet as the three principal historic towns of the World Heritage property.

Ayutthaya — 1351–1767

The Kingdom of Ayutthaya was established in 1351 and eventually became the dominant Siamese kingdom. It absorbed Sukhothai politically during the 15th century, although Sukhothai traditions continued to influence Ayutthayan art and architecture.

Ayutthayan architecture incorporated several earlier traditions, particularly Khmer and Sukhothai forms. The characteristic prang continued to be used alongside the bell-shaped chedi, while temples became increasingly elaborate and monumental.

The resulting architecture combines Khmer-derived, Sukhothai and other regional traditions. Hindu and Buddhist imagery and architectural forms existed alongside one another.

Ayutthaya remained the capital for more than four centuries until it was captured and destroyed by Burmese forces in 1767, bringing the Ayutthaya period to an end.

Taksin and the Thonburi period — 1767–1782

Following the Burmese destruction of Ayutthaya in 1767, the Siamese political system fragmented. Taksin, then governor of Tak, escaped the collapsing Ayutthayan system, raised forces in the eastern seaboard region and rapidly built a military base of support.

Within months of Ayutthaya’s fall, Taksin’s forces had defeated the main Burmese occupation forces and re-established a central Siamese kingdom. Rather than attempt to restore Ayutthaya as his capital, Taksin established his capital at Thonburi, on the western bank of the Chao Phraya River.

Taksin then spent the remainder of his reign consolidating Siam and campaigning against Burmese forces and rival regional powers. His forces also extended Siamese influence into areas of Lan Na, Cambodia and the Lao kingdoms, although the nature and degree of Siamese control varied considerably from place to place.

The Thonburi period lasted only 15 years. In 1782 Taksin was overthrown and executed, and his principal military commander, Chao Phraya Chakri, became King Rama I.

Chakri dynasty / Rattanakosin era — 1782–present

In 1782, Rama I founded the Chakri dynasty and moved the capital from Thonburi to the eastern bank of the Chao Phraya River, establishing the city that became Bangkok.

The new capital was deliberately established in a more defensible location, with the river and an extensive system of canals providing important defensive advantages. The new royal city became known as Rattanakosin, and the period beginning in 1782 is therefore generally referred to as the Rattanakosin era.

The Chakri dynasty continues to reign today. The term Rattanakosin is also commonly used for the broader historical and cultural period beginning with Rama I, although Thailand’s political system changed fundamentally with the end of absolute monarchy in 1932.

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