Spanish period The valley encompassing La Trinidad was originally called "
Benguet", a thriving community of
Ibaloi migrants from Tinek. In 1620, Fajardo sent the first expedition under Captain
García Aldana y Cabrera, Governor of
Pangasinan. Aldana and his men took the route from
Aringay, crossing the Naguilian River to Duplas (now in
La Union), then followed the Bornotan (Santo Rosario) River eventually reaching
Takdian. Upon arriving at the mining community of
Bua, the men found only a recently burned village, suggesting the natives fled with nothing for them to plunder. Aldana examined the
Antamok mines and was able to gather some gold. Together with 40 smaller surrounding
rancherías, La Trinidad was placed under the jurisdiction of the newly established Benguet
commandancia político-militar in 1846 and was established as its administrative headquarters during the
Spanish Conquest of the Philippines.
American period During the
Philippine Revolution, in July 1898, Filipino revolutionary forces under the Ibaloi chieftain
Juan Cariño and
Pedro Paterno liberated La Trinidad from the Spaniards and took over the government, proclaiming Benguet as province of the new
Philippine Republic, and La Trinidad as its capital. For a brief period,
Baguio was the
capital of Benguet when appointed Benguet province civil governor H.P. Whitmarsh moved the seat of government from La Trinidad to Baguio in 1901. La Trinidad was again the provincial capital in 1909 after Baguio was converted from a township into a
chartered city.
Modern history La Trinidad was transformed into a full-fledged town from its former status as municipal district by virtue of
Republic Act No. 531, approved June 16, 1950. On June 23, 2016, La Trinidad was highlighted in the media when the first and largest community artwork in the Philippines, the
STOBOSA Hillside Homes Artwork was unveiled, featuring hillside houses in the
sitios of Stonehill, Botiwtiw and Sadjap of Barangay Balili, all painted with
sunflowers and multicoloured abstract designs. ==Geography==