Pennsylvania Hall, "one of the most commodious and splendid buildings in the city," was an abolitionist venue in Philadelphia, Pennsylvania, built in 1837–38. It was a "Temple of Free Discussion", where antislavery, women's rights, and other reform lecturers could be heard. Four days after it opened it was destroyed by arson, the work of an anti-abolitionist mob. Except for the burning of the White House and the Capitol during the War of 1812, it was the worst case of arson in American history up to that date.