According to BMX rider Billy Perry:
We hit the streets of Roosevelt Island and tried to infiltrate one of the best and most secure spots to ride in NYC.
Billy and his crew dodged security at FDR Four Freedoms Park , which does not allow bicycles inside, went up the Grand Staircase then jumped his bike over the Wall and onto the ramp

Image From Billy Perry You Tube Screenshot
before quickly exiting the park and exploring the rest of Roosevelt Island for bike tricks.
Watch the Roosevelt Island BMX stunts.
