At the Petersen Automotive Museum in Los Angeles, you can check out three floors of antique, classic, modern, and exotic cars plus all the rarities in the Vault. But if you wanted to see how all those stunning vehicles are maintained and preserved, you couldn’t—until recently. The Petersen is now selling tickets for its Workshop Tours.

During the Workshop Tour, 25 attendees get to see how the museum’s mechanics, technicians, detailers, and porters keep the exhibit vehicles running and looking their best. The cars in the Workshop change regularly; one that previously received some TLC there was a 1993 Bugatti EB 110, the 552-horsepower, V12-powered product of the iconic brand’s 1990s Italian renaissance.

As part of the walk-through, museum staff will also take visitors on a guided tour of the Vault, which currently houses a 1939 Bugatti Type 57C Atalante, 1948 Tucker 48, and 1957 Mercedes-Benz 300 SL “Gullwing.”

The Workshop Tours are only available on Saturdays; tickets are $99 for adults (18+) and $50 for children 17 and under. Each ticket also includes general admission so, once the guided tour is over, you can begin the free-roaming tour of the museum’s various exhibits, such as The Wedge Revolution: Cars on the Cutting Edge and GM’s Marvelous Motorama: Dream Cars from the Joe Bortz Collection. For more information on the Petersen Automotive Museum’s Workshop Tours, click here.