The last time BTS was in New York, they shut the city down. Well, Jimmy Fallon figured they could do it a whole lot bigger this time around. Everyone's favorite KPop group literally shut down Grand Central Station to perform their new single 'ON' off their freshly released album Map Of The Soul: 7. The fun with Fallon didn't stop there. They also did an interview on the subway where Jimmy asked the hard-hitting super fan questions. Check out the the performance and the one of a kind interview below.