You might stumble across a sign for Matt’s Place Drive-In in Butte, Montana, while cruising down Interstate 15. Located on a busy north-south street downtown, the white clapboard structure with turquoise trim is about as unassuming as it gets, even accounting for the flashy neon sign and six-pointed star on the roof.

Inside the wood-framed building, you’ll find 86 years of mountain history. Founded in 1930 by proprietor Matt Korn, Matt’s Place is believed to be the oldest drive-in in the state of Montana, and a concoction called a Nut Burger, a beef patty topped with chopped salted peanuts mixed with Miracle Whip, is its claim to fame.

“You’d think it wouldn’t work, but it’s really amazing,” said Greg Motz, host of the Travel Channel’s “Burger Land,” in a 2013 Men’s Journal piece on America’s standout burgers.

Another point of pride: the menu hasn’t changed significantly since the 1930s. Patrons can still enjoy a strawberry milkshake made with ice cream that’s hand-churned each morning on site. If you're not a hamburger fan, and a fried egg or barbecue pork sandwich is more your speed, they’ve got you covered there as well.

The story behind Matt’s place is a quintessentially rural American one. Korn ran the establishment until 1943, when he sold it to former Matt’s Place carhop Mae Waddell and her husband Louis Laurence. As local legend has it, the couple didn’t have enough money for a new sign, so the Matt’s Place name (and the sign above the door) remained. Mae and Louis ran the diner together until Louis’s death in 1962, at which point Mae became the sole proprietor. She passed away in January of 2013 at the age of 100, leaving the care of Matt’s Place in the hands of her daughter, Robin Cockhill, and her husband Brad, who still run it today.

The horseshoe-shaped lunch counter, installed in 1936, still boasts its original 16 stools, but for those patrons who want to experience a different facet of the establishment’s history, Matt’s Place still offers curbside car hop service. The glass bar back and shelves have remained in place since the 1930s. A soda fountain and Coca-Cola machine dating from the '50s, as well as murals of the surrounding mountains, line the walls.

Matt’s Place was listed on the National Register of Historic Places in 2001, and despite its strict tradition of not advertising, it has won a number of awards and recognition over the years—most recently, the 2016 America’s Classics Award from the James Beard Foundation.

Matt’s is only open five days a week seasonally—11:30 a.m. to 7 p.m. Tuesday through Saturday in the spring, summer, and fall—so it’s best to call ahead if you’re planning on dropping by. When you do, be sure to order the Nut Burger and a milkshake with a side of hand-cut fries. It's a far cry from any modern drive-through that you're likely to find, in Montana or anywhere, and the people of Butte like it that way.