Petrolia is the birthplace of Canada's oil industry. In 1858, James Miller Williams struck oil nearby, and within a few years the town was booming. The wealth that flowed from those early wells built the grand Victorian streetscape that still lines Petrolia Line today — ornate brick buildings with elaborate cornices and stone trim, most of them designated heritage structures. A slow drive through town is like flipping through a catalogue of late-nineteenth-century architectural ambition.
Petrolia Discovery and the Oil Museum of Canada just south of town tell the story of the drillers who went from here to develop oil fields around the world — from Borneo to Persia. Victoria Hall, the town's 1889 opera house, has been beautifully restored and still hosts performances. The surrounding countryside is flat Lambton County farmland, dotted with the nodding heads of old pump jacks that still draw oil from shallow wells drilled over a century ago — including those still operating at the Fairbank Oil Fields.