According to NASA, there have been six lunar landings, all under the Apollo program. The first moon landing was by Apollo 11 on July 16, 1969. The last was Apollo 17, which landed on the moon on December 7, 1972.
The best remembered lunar landing is probably the first, Apollo 11. The lunar module landed on Tranquility Base at 4:18 p.m. EDT, and astronaut Neil Armstrong took the first step on the moon at 10:56 p.m., making the now iconic statement, "That's one small step for man, one giant leap for mankind." Apollo missions 12, 14, 15, 16 and 17 also took men to the moon and brought them back home safely. Scientific experiments performed on the lunar surface included studying lunar wind, soil and magnetic fields.