Two Pennsylvania teenagers are accused of setting up their own 'speakeasy' for underage customers.
Police in Upper Uwchlan say the pair set up shop in an old barn, installing gambling tables and a bar.
The barn, for up to 100 customers, had blacked out windows and soundproofing so they didn't alert neighbours.
Police say the 17-year-old boys have been arrested and face several alcohol and tobacco-related charges.
Officials say the business had probably been up and running for several months, according to reports.
Police and investigators from the state Liquor Control Board discovered the speakeasy during a raid.
John DeMarco, Upper Uwchlan's police chief, said: "I've never seen anything like this before."
Officers confiscated more than 100 bottles of alcohol, a keg of beer, cases of beer and champagne, and
tobacco products. They also found a lounge area, a ping-pong table and a stereo system.
Chester County District Attorney Joe Carroll said: "It would've taken some money to get this rolling."
Margaret Duca, who lives next door to the barn, said: "I have to give credit to the police for being on top of things, because we were right next door and we didn't know what was going on."