Siem Reap
From the 16th to the 19th centuries, infighting among the Khmer nobility led to periodic intervention and domination by both of Cambodia's more powerful neighbors, Vietnam and Siam. Siem Reap, along with Battambang (Phra Tabong) and Sisophon, major cities in northwest Cambodia, was under Siamese administration and the provinces were collectively known as Inner Cambodia from 1795 until 1907, when they were ceded to French Indochina. During the 18th century, under the rule of the Ayutthaya Kingdom, it was known as Nakhon Siam ('Siam's city').