Foundation and first mentions. The history of Iloilo is rooted in the pre-colonial era, when thriving settlements already existed on the site of the modern city. According to local legends, the origins of the name "Iloilo" are linked to the word "Irong-Irong," the name given to this land by settlers from Kalimantan in the 13th century. The official history of the city is closely intertwined with the arrival of the Spanish. In 1566, an expedition led by Miguel López de Legazpi established a settlement here, originally named Oton. Due to frequent pirate attacks and threats from Dutch and English navigators, the settlement was moved several times until it found its final location at the mouth of the river, which spurred its development.
Key factors of formation. Iloilo owes its growth and influence primarily to its strategic geographic location. Situated on the shores of the strait, the city possessed a protected natural harbor, making it an important seaport and trading hub. In 1855, following the opening of the port to international trade, the city began to develop rapidly. Iloilo's political significance also grew: in the 17th century, it became the provincial capital, and in the late 19th century, during the Philippine Revolution, it briefly became the last stronghold of the Spanish government in Asia.
Early cultural and economic features. Iloilo's economic prime occurred in the 19th century when the city transformed into the "Sugar Capital" of the Philippines. The boom in the sugar industry attracted vast capital to the region, contributing to the formation of a wealthy local elite and the emergence of luxurious mansions, many of which have survived to this day. During this period, Iloilo was not only an economic leader but also an important cultural center, earning the unofficial title of the "Queen City of the South". It was also known as the textile capital of the country. The rich heritage of Spanish colonial architecture, including churches, cathedrals, and administrative buildings, remains the city's calling card to this day.