The year was 1915. Just nine years after the 1906 earthquake and fire leveled roughly 80% of the city, San Francisco hosted the Panama Pacific International Exposition — a world's fair designed to tell the planet, in no uncertain terms, that the city was open for business. And it worked spectacularly.

The fairgrounds sprawled across what is now the Marina District and Crissy Field, featuring enormous exhibition palaces, a Tower of Jewels studded with over 100,000 cut glass gems, and Festival Hall — a grand performance venue that hosted everything from orchestras to political speeches. The whole thing was built on landfill, which, if you know anything about the Marina's seismic history, adds a layer of irony thick enough to register on the Richter scale.

As one SF resident put it, "I'm so glad the people of yesteryear fought tooth and nail to shape the city what it is today." That sentiment hits different when you consider what the Exposition represented: a city that refused to stay down. No federal bailout. No decade-long bureaucratic recovery plan. San Francisco rebuilt itself and then invited the entire world to come see.

The Exposition also gave us lasting infrastructure. The Palace of Fine Arts — the one structure intentionally preserved — still stands in all its Beaux-Arts glory. Crissy Field, which later served as a military airstrip, has since been restored to something closer to its natural marshland. One local aviation enthusiast noted it "would have been the coolest strip to fly into or out of" back in the day, while also appreciating that it's returned to its marshy roots. Another resident quipped that the "Air Force had Sports Basement on lock in those days" — not wrong, given the old airfield's footprint.

The real lesson of the 1915 Exposition? When government gets out of the way and civic ambition takes over, extraordinary things happen fast. San Francisco went from rubble to world-class fairground in under a decade. Today we can't get a bus shelter permitted in that timeframe.

Something to think about next time you're strolling past the Palace of Fine Arts, dodging tourist selfie sticks.