Friends' fans engaging in unfriendly behavior at iconic Greenwich Village, New York City apartment - ABC7 New York

Visitors have been flocking to the iconic NYC apartment building where Monica, Rachel, Phoebe, Joey, Ross and Chandler spent their time for decades -- but now there are concerns about some of their unfriendly behavior.

⁴ᴷ⁶⁰ Walk in New York City : Friends apartment in the morning - Greenwich Village.

Friends' in NYC: How plausible were the Greenwich Village apartments depicted in the hit '90s series?

Friends' in NYC: How plausible were the Greenwich Village apartments depicted in the hit '90s series?

Friends tv show apartment hi-res stock photography and images - Alamy

Friends' fans engaging in unfriendly behavior at iconic Greenwich Village, New York City apartment - ABC7 New York

Matthew Perry fans flock to 'Friends' apartment in NYC

Friends Apartment, NYC

Friends fans will remember this iconic location

Visiting the Friends apartment in New York!#friends #friendsapartment