1797    Sir Ralph Abercromby attacks San Juan, Puerto Rico in what would be one of the largest invasions of the Spanish territories in America.

1898    The United States invasion of Puerto Rico begins with U.S. troops led by General Nelson Miles landing at harbor of Guánica, Puerto Rico (The land invasion, proper, began that day: Sea-based bombardment and shelling of the capital city of San Juan had been occurring since May 1898).

1978    Karl Wallenda of The Flying Wallendas dies after falling off a tight-rope between two hotels in San Juan, Puerto Rico.

1986    A fire at the Dupont Plaza Hotel in San Juan, Puerto Rico, kills 97 and injures 140.

1996    A propane explosion at the Humberto Vidal shoe store and office building in San Juan, Puerto Rico kills 33.