We embarked on an intense and exhilarating adventure, descending 450 feet down a waterfall inside a massive 30-mile-long cave ...

At over 130 feet high, it's the tallest indoor waterfall in the world ... Part luxury mall and part indoor rainforest, here's a look inside the complex making layovers more fun.

Videos from Yosemite National Park show the iconic "Firefall" phenomenon glowing at Horsetail Fall inside the park.

Skies need to be clear, and any sort of haze or clouds could diminish or altogether stop the waterfall from glowing. "The Horsetail Fall event is a natural phenomenon that has grown in popularity ...