The tunnels beneath Dupont Circle known as the Dupont Underground remain empty, but there’s yet another proposal floating around for their use: urban wineries. Urban Turf reports:

Three urban wineries are in talks with the team behind the Dupont Underground about the possibility of opening up in the space, architect Julian Hunt said at a talk at the District Architecture Center on Thursday evening.

Hunt, the founder and chairman of the Arts Coalition for the Dupont Underground (ACDU), said that the group is eager to engage the 75,000-square foot subterranean space with art galleries and other creative projects, but understands that a winery may fulfill the need for an economically viable use and also “fit our program.”

Hunt also said that another possible idea involving drilling skylights out of the ground above the tunnels to make the space more inviting, as well as creating a park running along Connecticut Avenue above the tunnels.

Other than a food court that quickly failed in the mid-90s, the Dupont Undergound has remained unused since it was used as a streetcar turnaround in the 1960s and before.