There was a ride at Disney World called Body Wars that allowed you to be shrunk so you could carry out a special mission inside the human body aboard vehicle called Bravo 229. In the ride, you got to enter through the skin to help out the Doctor due to a splinter had entered the body. The riders rode past the lungs, the heart, and the rest of the body. Sadly, the ride is no longer operational, but there was… Read more.