Pope Francis Arrives in the US for Historic Visit

The pontiff's historic visit is starting in Washington, D.C.

The visit to Washington D.C. will last through Thursday, and will include a landmark address to Congress which none of the previous three popes who visited the U.S. have done. From there, he will travel to New York City, where he will stay until Saturday morning when he will travel to Philadelphia. He will stay in the 'City of Brotherly Love' until Sunday night, when he takes an evening flight back to the Vatican.

Get real-time updates as this story unfolds. To start, just "star" this story in ABC News' phone app. Download ABC News for iPhone here or ABC News for Android here.