The website wrote, “Son Doong Cave has ceilings so high (600 feet) they could accommodate the Washington Monument. Its widest expanses (450 feet) could fit a pair of Boeing 747s side by side. A shimmering blue river runs through it. Most spectacularly, a jungle flourishes under shafts of sunlight in stretches where the ceiling fell in long ago.”

Smithsonian described the cave as more than five miles long—about five times longer than its nearest competitor for the world’s longest, Deer Cave in Sarawak, Malaysia. Photo: Ryan Deboodt.
Home of the God Particle: Cern Laboratory, Switzerland
Photo:iop
Leaving the Earth: Spaceport America, New Mexico
Photo: fosterandpartner.
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Photo:wiki
The Starriest Night: Alma Telescope, Chile
Photo:  eso

The Incredible Shrinking Glacier: Mendenhall Ice Caves, Alaska
Photo: imgur

The Fastest Rollercoaster: Ferrari World, Abu Dhabi
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The Deepest Dive: Cayman Trench, Caribbean Sea
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The Mecca of Islamic Art: Museum of Islamic Art, Qatar
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Photo: businessinsider.