Thousands gather in New York for mass with Pope Francis

Tens of thousands of people have lined the streets of Central Park in New York to welcome Pope Francis.

He held a special mass tonight at Madison Square Garden as he continues his tour of the US.

Earlier, he called for the United Nations to do more to protect the environment and held a moment of prayer at Ground Zero.

What's it like to get a standing ovation at #MadisonSquareGarden? #PopeinNYC Watch: http://t.co/OFpbXB1ydP

— Erin Burnett OutFront (@OutFrontCNN) September 25, 2015

Pope Francis will arrive in Philadelphia tomorrow for the final leg of his four day visit to the US.

He will fly back to Rome on Sunday.