Si Ayutthaya Road

Si Ayutthaya Road is a road in inner Bangkok. It starts from Ratchaprarop Road at Makkasan Intersection in the Ratchathewi district and runs eastward, crossing Phaya Thai Road, Rama VI Road, Kamphaeng Phet 5 Road, and the northern railway line. It then enters Dusit district, passing many important sites such as Dusit Palace, Wat Benchamabophit, the Royal Plaza, Paruskavan Palace, before ending at the intersection with Samsen Road near the Chao Phraya River at Si Sao Thewet Intersection.
It was formerly known as Thanon Duang Tawan and can be divided into three sections: Thanon Duang Tawan Nok, Thanon Duang Tawan Nai, and Thanon Duang Na, according to the directions they run. The road was built in 1898, during the reign of King Chulalongkorn, alongside Dusit Palace and the surrounding roads. Its name is derived from a type of Chinese ceramic featuring sunrise-from-the-sea motifs, which was one of the most popular collections of that era.
Later, on 6 February 1919, during the reign of King Vajiravudh, he renamed these roads, including Duang Tawan Road. The name "Si Ayutthaya" commemorates his former royal title, "Krom Khun Thep Dvaravati", which refers to the Prince of the Ayutthaya Kingdom.