The province is located on lowland flood plain, and the watershed has a distinguished national
importance for including the historical City, a UNESCO World Heritage site. This ancient City was the
former capital of the Kingdom for 417 years in medieval times, and had an estimated peak population of a
million. The modern City (the provincial capital) is located nearby to the east. The major sources of
employment in Ayutthaya province are agriculture, horticulture, and animal husbandry that engage almost
80% of the workforce, but a range of industries (chemical, electronic, oil, textile, and food) are also present.