The Apollo 11 Lunar Module (LM) is
currently on the surface of the Moon. It's been there since July 20, 1969, when astronauts Neil Armstrong and Buzz Aldrin landed it in the Sea of Tranquility. The descent stage of the LM remains there, while the ascent stage was jettisoned after the astronauts returned to lunar orbit.
The Apollo 11 Command Module (CM) is currently at the Smithsonian National Air and Space Museum in Washington, D.C. It was the part of the spacecraft that brought the astronauts back to Earth.