Kamphaeng Phet is the Sukhothai-era city that most travellers miss. It sits on the Ping River in lower northern Thailand, midway between the better-known historic sites of Sukhothai and central Thailand, and its old name, Chakangrao, belonged to a fortified frontier town of the Sukhothai kingdom.
The draw is Kamphaeng Phet Historical Park, part of the UNESCO-listed "Historic Town of Sukhothai and Associated Historic Towns." It does not have Sukhothai's broad lawns and postcard symmetry. Its character is rougher and more solitary: laterite walls, forest temples, elephant-ringed chedis, and Buddha images scattered through a park that often feels almost empty.
That quiet is exactly why Kamphaeng Phet works. You can cycle between Wat Phra Kaeo, Wat Chang Rop, and the archaeological museum without feeling pulled through a fixed tourist circuit. It is not a substitute for Sukhothai, but it is a strong second chapter for travellers who want to see how the kingdom's defensive and religious landscape continued beyond the old capital.