To this day, the Saturn V - and ticket into the history books during the '60s and early '70s - remains the only rocket capable of transporting humans beyond low-earth orbit, where the International Space Station resides. And it's a monster.
We recently visited the never-used, ready-for-flight Saturn V that was destined to transport NASA's Apollo 18 crew to the moon before the US government canceled the mission in 1970.
Words cannot describe the experience of standing next to one of humankind's most impressive engineering feats. But these photos should give you an idea: