When it comes to luxury apartments in cities like New York, Chicago, and Los Angeles, it seems like the sky’s the limit. This certainly seems to be the case with an impressive $4-million Chicago condo that comes complete with a basement exhibition gallery.

The luxe Collector’s Penthouse located in the Lake Point Tower includes a 2,537-square-foot luxury condo and a 2,700-square-foot underground showroom. Residents of the unit will also enjoy the building’s 2 acres of exclusive wooded ground on Lake Shore Drive.

With a contemporary aesthetic, an open floor plan, and outstanding views of the city and lake, the two-bedroom, two-bath penthouse is befit of its asking price.

The subterranean showroom takes the listing to the next level though with climate control and  strict security. Since there’s around $15 million to $20 million worth of vintage Porsches and Ferraris below ground—including a 1953 Ferrari 340 MM Competition Le Mans Spyder—security is obviously a top priority.

In addition to those prized vehicles, the new owner will find a wet bar and a built-in Bang & Olufsen sound system. The unit’s owner purchased the deeds to 14 parking spots along with the condo in order to develop the ultra-luxurious basement man cave/vault.