1120 - Richard III of Capua is anointed as prince two weeks before his untimely death.
1153 - Malcolm IV becomes King of Scotland.
1328 - Philip VI is crowned King of France.
1703 - Tsar Peter the Great founds the city of Saint Petersburg.
1798 - The Battle of Oulart Hill takes place in Wexford, Ireland.
1812 - South American Wars of Independence: In Bolivia, the Battle of La Coronilla, in which the women from Cochabamba fight against the Spanish army.
1813 - War of 1812: In Canada, American forces capture Fort George.
1849 - The Great Hall of Euston station in London is opened.
1860 - Giuseppe Garibaldi begins his attack on Palermo, Sicily, as part of the Italian Unification.
1863 - American Civil War: First Assault on the Confederate works at the Siege of Port Hudson.
1883 - Alexander III is crowned Tsar of Russia.
1895 - Oscar Wilde is imprisoned for sodomy.
1896 - The F4-strength St. Louis-East St. Louis Tornado hits in St. Louis, Missouri and East Saint Louis, Illinois, killing at least 255 people and causing $2.9 billion in damage (1997 USD).
1905 - Russo-Japanese War: The Battle of Tsushima begins.
1907 - Bubonic plague breaks out in San Francisco, California.
1908 - Maulana Hakeem Noor-ud-Din is elected the first Khalifa of Ahmadiyya Muslim Community.
1919 - The NC-4 aircraft arrives in Lisbon after completing the first transatlantic flight.
1927 - The Ford Motor Company ceases manufacture of the Ford Model T and begins to retool plants to make the Ford Model A.
1930 - The 1,046;feet (319;m) Chrysler Building in New York City, the tallest man-made structure at the time, opens to the public.
1933 - New Deal: The U.S. Federal Securities Act is signed into law requiring the registration of securities with the Federal Trade Commission.
1933 - The Walt Disney Company releases the cartoon The Three Little Pigs, with its hit song "Who's Afraid of the Big Bad Wolf?"
1933 - The Century of Progress World's Fair opens in Chicago, Illinois.
1935 - New Deal: The Supreme Court of the United States declares the National Industrial Recovery Act to be unconstitutional in A.L.A. Schechter Poultry Corp. v. United States, (295 U.S. 495).
1937 - In California, the Golden Gate Bridge opens to pedestrian traffic, creating a vital link between San Francisco and Marin County, California.
1940 - World War II: In the Le Paradis massacre, 99 soldiers from a Royal Norfolk Regiment unit are shot after surrendering to German troops. Two survive.
1941 - World War II: U.S. President Franklin D. Roosevelt proclaims an "unlimited national emergency".
1941 - World War II: The German battleship Bismarck is sunk in the North Atlantic killing almost 2,100 men.
1942 - World War II: In Operation Anthropoid, Reinhard Heydrich is assassinated in Prague.
1957 - Toronto's CHUM-AM, (1050 kHz) becomes Canada's first radio station to broadcast only top 40 Rock n' Roll music format.
1958 - The F-4 Phantom II makes its first flight.
1960 - In Turkey, a military coup removes President Celal Bayar and the rest of the democratic government from office.
1962 - The Centralia, Pennsylvania mine fire starts.
1965 - Vietnam War: American warships begin the first bombardment of National Liberation Front targets within South Vietnam.
1967 - Australians vote in favor of a constitutional referendum granting the Australian government the power to make laws to benefit Indigenous Australians and to count them in the national census.
1967 - The U.S. Navy aircraft carrier USS;John F. Kennedy is launched by Jacqueline Kennedy and her daughter Caroline.
1968 - The meeting of the Union Nationale des Étudiants de France (National Union of the Students of France) takes place. 30,000 to 50,000 people gather in the Stade Sebastien Charlety.
1971 - The Dahlerau train disaster, the worst railway accident in West Germany, kills 46 people and injures 25 near Wuppertal.
1975 - The Dibble's Bridge coach crash near Grassington, North Yorkshire, England kills 32 - the highest ever death toll in a road accident in the United Kingdom.
1980 - The Gwangju Massacre: Airborne and army troops of South Korea retake the city of Gwangju from civil militias, killing at least 207 and possibly many more.
1995 - In Culpeper, Virginia, actor Christopher Reeve is paralyzed from the neck down after falling from his horse in a riding competition.
1996 - First Chechnya War: Russian President Boris Yeltsin meets with Chechnyan rebels for the first time and negotiates a cease-fire.
1997 - The U.S. Supreme Court rules that Paula Jones can pursue her sexual harassment lawsuit against President Bill Clinton while he is in office.
1998 - Oklahoma City bombing: Michael Fortier is sentenced to 12 years in prison and fined $200,000 for failing to warn authorities about the terrorist plot.
1999 - The International Criminal Tribunal for the former Yugoslavia in The Hague, Netherlands indicts Slobodan Milošević and four others for war crimes and crimes against humanity committed in Kosovo.
2005 - Australian Schapelle Corby is sentenced to 20 years imprisonment in Kerobokan Prison for drug smuggling by a court in Indonesia.
2006 - The May 2006 Java earthquake strikes at 5:53:58 AM local time (22:53:58 UTC May 26) devastating Bantul and the city of Yogyakarta killing over 6,600 people.