1. The first subway in New York City opened on May 7, 1904. The subway consisted of a 9.1-mile route that ran from City Hall in Lower Manhattan to 145th Street in Harlem. The subway allowed New Yorkers to travel quickly and efficiently between boroughs and sparked the growth of the city.

2. On May 7, 1945, the German military surrendered to the Allies, effectively ending World War II in Europe. New Yorkers celebrated the news by pouring into the streets, honking car horns, and waving flags. The end of the war brought relief and joy to the city after years of sacrifice and hardship.

3. The Bronx Zoo's "World of Darkness" exhibit opened on May 7, 1991. The exhibit showcased nocturnal animals, including bats, owls, and sloths, in a simulated nighttime environment. The exhibit was groundbreaking for its innovative use of sound, lighting, and technology to create an immersive experience for visitors.

4. The first ticker-tape parade in New York City was held on May 7, 1886, in honor of the dedication of the Statue of Liberty. The parade consisted of thousands of New Yorkers throwing ticker tape from their office windows onto the streets below in celebration of the iconic statue.

5. On May 7, 1964, the New York World's Fair opened in Flushing Meadows-Corona Park in Queens. The fair showcased futuristic technologies and advancements, including the first public demonstration of a videophone and the debut of the Ford Mustang. The fair attracted millions of visitors and left a lasting impact on the city's cultural landscape.