Tens of thousands of people showed up at the Capitol building in Washington, D.C., on Thursday to catch a glimpse of Pope Francis on the day he became the first pope to address a joint meeting of Congress.
Much of Washington, D.C., New York City and Philadelphia will be shut down during parts of this week as the pope visits each of the three northeastern cities.
We pulled together some pictures of the mass of people, below.
[nggallery id=24422 layout="list"]