The Seward Street Slides in the Castro are having a moment again, and for good reason. Two concrete slides tucked into a hillside staircase, open to the public, zero admission fee. The catch? You need to bring your own cardboard to actually slide properly. No cardboard, no ride — just an undignified scraping sound and a bruised ego. It's the kind of gloriously low-budget infrastructure that would never survive a modern permitting process, which is probably why it's so beloved.

As one local put it, the whole city is basically an open-world game: "Head to your nearest bar, ask the bartender if he's heard any rumors lately or if there's any work needs doing around town." Honestly? Not terrible advice for a Friday night.

But the slides are just the entry-level quest. San Francisco is packed with oddly specific, completely free experiences that most residents never bother with. The Wave Organ at the Marina — a stone amphitheater that turns tidal movement into weird ambient music. The labyrinth at Lands End, which someone painstakingly maintains out of rocks on a clifftop overlooking the Golden Gate. The 16th Avenue Tiled Steps in the Sunset. The tiny museum inside the Cable Car barn on Mason Street.

Here's what's interesting about all of these: virtually none of them cost taxpayers or visitors a dime. They're community-built, community-maintained, or happy accidents of urban geography. No $1.7 billion bond measure required. No five-year environmental review. Just people making cool things and other people enjoying them.

There's a lesson buried in these sidequests for anyone at City Hall willing to hear it. San Franciscans don't need another bloated civic project to love their city. They need the freedom to build weird concrete slides and stack rocks on cliffsides — and a government that doesn't get in the way.

The best things about this city were never planned by committee. Grab some cardboard and go find out for yourself.