Phitsanulok (Thai พิษณุโลก) is one of the
provinces (changwat) of Thailand, located in
the North of Thailand. Neighboring provinces are
(from east clockwise) Loei, Phetchabun, Phichit,
Kamphaeng Phet, Sukhothai, Uttaradit. In the
north-east it also has a short border with
Xaignabouli of Laos. King Borommatrailokanat
(1448-1488) moved the capital of the Ayutthaya
kingdom to Phitsanulok in 1463 to strengthen the
northern boundary of the kingdom. His successor
Boromma Ratchathirat III moved it back after his
death in 1488. In 1555 King Naresuan the Great was
born in the city.