Cass Gilbert's Marble Dome Still Runs Minnesota

Minnesota conducts its business inside a work of art, and most days it barely notices. The State Capitol in St. Paul, designed by Cass Gilbert and completed in 1905, rises over the capital city in white Georgia marble, crowned by a self-supported dome that is the second largest of its kind in the world after St. Peter's in Rome. Gilbert went on to design the U.S. Supreme Court building; Minnesotans got his masterpiece first, and cheaper.

The building houses the governor, the Senate, the House of Representatives and the state Supreme Court's ceremonial chamber, but its real work is symbolic. The gold-leafed Quadriga — the four-horse chariot group above the main entrance — the murals in the rotunda and Governor's Reception Room, and the grand staircases were built to tell a young prairie state that it intended to last. A sweeping restoration completed in 2017 repaired a century of wear and returned the building's public rooms to their original light.

November is a hinge month at the Capitol. The election on Tuesday decides who works here next; the legislative session that convenes in January will fill the marble halls with the arguments those elections set up. Between the two, the building belongs to school tours, weddings in the rotunda and the steady traffic of citizens who have learned that in Minnesota, government is a place you can simply walk into.

The Capitol also anchors St. Paul's identity against its twin across the river. Minneapolis got the mills, the skyline and the lakes; St. Paul kept the dome, the cathedral that faces it across the hill, and the quieter confidence of a capital city. The rivalry is mostly affectionate now, but walk the Capitol mall at dusk, with the dome lit above the city, and the case for St. Paul makes itself.

On Tuesday night, results will be counted in rooms Gilbert designed for exactly that purpose. However they fall, the building will do what it has done since 1905: outlast the argument, and host the next one.