Portal:Philadelphia/Selected anniversaries/May


 * May 6, 1844 - An anti-Catholic riot erupts in Kensington, the riots continue for three days.
 * May 10, 1876 - the Centennial Exposition opens with a ceremony attended by U.S. President Ulysses S. Grant and Brazilian Emperor Dom Pedro and their wives.
 * May 10, 1877 - Pennsylvania Museum and School of Industrial Art opens the museum which would eventually become the Philadelphia Museum of Art.
 * May 12, 1985 - After a gun battle with members of MOVE, Philadelphia police drop a bomb on the MOVE compound starting a fire that destroys 61 houses and kills eleven MOVE members.
 * May 16, 1957 - The Walt Whitman Bridge opens between Philadelphia and Camden, New Jersey.
 * May 18, 1778 - The Mischianza, an elaborate fête given in honor of British General Sir William Howe is held.
 * May 28, 1755 - Construction of Pennsylvania Hospital, the first hospital in the United States, begins.