Donald Trump, who overcame impeachments, criminal indictments and a pair of assassination attempts to win another term in the White House, was sworn in Monday as the 47th U.S. president, taking charge as Republicans claim unified control of Washington and set out to reshape the country’s institutions.

Which president had the longest inaugural address? Which has been sworn in the most? Which ended the ceremony’s top-hat tradition? Here are some tidbits you might not know about Inauguration Day.