Los Baños is an oasis of many springs, as its name suggests. Mainit, the town's Tagalog name, means "hot" and alludes to the thermal springs that abound along the shores of Laguna de Bay. The medicinal properties of these springs were known to the Filipinos long before the Spaniards came to the country.

Mainit was a barrio of Bay until 1589. In 1595, a temporary building made of bamboo and cogon was built to serve as shelter for the patients who journeyed to Mainit to seek cures for their ailments. In 1671, more permanent structures like churches and hospitals were built only to be destroyed by a fire in 1727. The structures were re-erected at a slow rate. The church which now stands in Bayan, Los Baños dates back to 1851. The Spanish Governor's palace was began in 1879 but was only completed in 1892. This building provided the setting for one of the chapters of El Filibusterismo, the novel written by Jose Rizal.

Sixty-three kilometers south of Manila, Los Banos is the next town to Calamba from the South Expressway exit.

Source: www.laguna.net