Title: Kanchanaburi
Content:  Kanchanaburi (กาญจนบุรี, ) is a town municipality (thesaban mueang) in the west of Thailand and part of Kanchanaburi Province. In 2006 it had a population of 31,327. That number was reduced to 25,651 in 2017. The town covers tambons Ban Nuea and Ban Tai and parts of Pak Phraek and Tha Makham, all of Mueang Kanchanaburi District, and parts of tambon Tha Lo of Tha Muang District. Kanchanaburi lies 123 km west of Bangkok.
Title: Mueang Kanchanaburi District
Content:  Mueang Kanchanaburi (เมืองกาญจนบุรี, ) is the capital district (amphoe mueang) of Kanchanaburi Province, central Thailand.
Title: Kanchanaburi
Content:  Kanchanaburi, where the Khwae Noi and Khwae Yai Rivers converge into the Mae Klong River, spans the northern banks of the river and is a popular spot for travelers. Its location at the edge of a mountain range keeps it much cooler than the other provinces of central Thailand. The city has two major commercial districts: the downtown area consists of a grid of several streets with office buildings, shop fronts, and a shopping mall; and the riverfront area businesses are mostly further west along River Kwai Road. Once a year a carnival comes to town and is set up in the area next to the bridge. At night there is a small pyrotechnics display that re-enacts the wartime bombing of the bridge.
Title: Kanchanaburi Province
Content:  Kanchanaburi (กาญจนบุรี, ) is the largest of the western provinces (changwat) of Thailand. The neighboring provinces are (clockwise, from the north) Tak, Uthai Thani, Suphan Buri, Nakhon Pathom, and Ratchaburi. In the west it borders Kayin State, Mon State, and the Tanintharyi Region of Myanmar. Tourists are attracted by the history of its ancient civilization and the World War II Bridge over the River Kwai, originally spelt "Khwae" but officially changed to Kwai to accommodate the expectations of tourists.
Title: Kanchanaburi Province
Content:  Kanchanaburi appears in the chronicles that Kanchanaburi was a colony of Suphanburi during the Sukhothai period. Until the Ayutthaya period Kanchanaburi is also an important outpost in the war between Thai and Burmese armies. Until the Thonburi period and Rattanakosin period, the original Kanchanaburi city was originally located at Tambon Lat Ya (At the present at Khao Chon Kai Training Camp). Kanchanaburi was a battlefield during Burmese–Siamese War (1785–1786). In 1831, King Rama III ordered the construction of the city wall and the fortress at Kanchanaburi, located at Tambon Pak Phraek, which is the place of confluence of the Khwae 
Title: Kanchanaburi
Content:  Kanchanaburi is the birthplace of the Buddhist monk Phrabhavanaviriyakhun. It is 5 km southeast of the Buddhist temple Wat Tham Phu Wa which features a series of grotto shrines within a large limestone cave system. Each grotto features a statue of the Buddha at a different stage of his life. It is the easiest access point to the nearby Tiger Temple (closed) and is also home to a Vipassana meditation center.
Title: Kanchanaburi
Content:  Kanchanaburi has a tropical savanna climate (Köppen climate classification Aw). Winters are dry and very warm. Temperatures rise until April, which is very hot with the average daily maximum at 38.2 °C. The monsoon season runs from May through October, with heavy rain and somewhat cooler temperatures during the day, although nights remain warm.
Title: Kanchanaburi Province
Content:  Kanchanaburi's main station is Kanchanaburi Railway Station.
Title: Kanchanbari
Content:  Kanchanbari is a village in Kumarghat subdistrict, under Unakoti district in the state of Tripura, in India. This progressive village is located 28 km to the south of the district headquarters at Kailasahar and 91 km from the state capital at Agartala. Approximately this village has a population of 6,649 people.
Title: Kanchanaburi Province
Content:  Kanchanaburi is divided into 13 districts (amphoe). The districts are further divided into 98 subdistricts (tambon) and 887 villages (muban).

Question: What is Kanchanaburi the capital of?
Answer: Kanchanaburi.
Kanchanaburi Province.