10The Abyss’ underwater set
Maybe the most outstanding underwater movie sets of all time. An underwater diving platform was constructed in a 7 million gallon tank in an abandoned nuclear plant. The plant was filled with water, and using a 26 person diving crew, Cameron shot the whole film underneath. Even though it had to withstand constant leaks, lightning strikes, chlorine burn, algae infestations, and power outages, it was an impressive achievement for engineering. Click the next ARROW to see the next image!