Monday marked the official 125th anniversary of Minneapolis' City Hall building, which also serves as the Hennepin County Courthouse, a big milestone we wrote about a couple weeks ago.
Here are nine things we bet you didn't know about this iconic downtown building and clocktower.
1.The exact anniversary date is a little squishy.

Construction of the building actually started in 1887, but the cornerstone was laid on July 16, 1891. That cornerstone is located 30 feet above ground instead of at ground level because construction of the granite building had already started a few years beforehand. By the way, some of those individual granite blocks weigh 23 tons – that's 46,000 pounds – and were cut from quarries near Ortonville, Minn.
2.There are fossils in the marble walls.

If you walk in at the South 5th Street entrance, you'll notice some interesting shapes in the pink marble walls – those are fossils. We think that curly bit there is a nautilus shell.
3.There's a plaque with what looks like a misspelling, but it's not.

The sign that says "Fovrth Street Entrance" isn't an old-school typo – that's just what the street was named back then, when v's often substituted u's.