Our Pick
Posted on @rawstates
The Idaho Capitol
1920
Boise, Idaho
Quintin Soloviev · CC BY 4.0 · Wikimedia Commons
The only state capitol heated by geothermal water, piped from a hot aquifer 3,000 feet down that has warmed parts of Boise since 1892, one of the oldest district heating systems in the world.
That was 1 of the hidden places.
Location: documented spot
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