In Milwaukee, Wisconsin there are plenty of fascinating things to see, ranging from the strikingly gorgeous Milwaukee Art Museum to the time machine Bronze Fonz statue to the exceptional German food and beer scene. But beyond all of that, there’s a gem hidden in the most unusual of places that most tourists would never see. Unless, of course, they stayed there.

In the late 19th century, the Northwestern Mutual Life Insurance Co. had commissioned the construction of a Richardsonian Romanesque building designed by S.S. Beman. That building, known as the Loyalty Building was completed in 1886 and is now both a National Historic Landmark and the most beautiful and unique Hilton Garden Inn I’ve ever been in.

The building was built of Maine and Indiana granite, with arches and modern features like dual-lighting (gas and electric!), heating and an innovative cooling system. A massive glass ceiling lets in tons of natural light, and the floors feature terra cotta and terrazzo tiles in intricate patterns. Honestly, you don’t know where to look there’s just so much to see!

But then you see and know. The star of the show is the staircase, with cast iron balusters and bronze newels topped with tall copper inverted cone-shaped finials. It’s those finials that catch your attention—that’s a lot of copper sitting their marking time. Those cones made it through the Great Depression and two world wars. And it’s the story of their survival that is most interesting of all.

During World War II, copper was in short supply and being scooped up and thrown into the war effort all over the country. The building’s owner at the time, not having the heart to see the copper finials melted down, painted them black to escape notice. They stayed that way, forgotten it seems, until the 1960’s when they were uncovered for the world to see once again. And all you have to do is step into the Hilton Garden Inn in Milwaukee.