One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Quite simply the largest tree in the world (by volume).

Towering basalt columns, a creation of fire and ice.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

A rescue facility that caters specifically to wolf-dog hybrids, and educates about these unique animals.

The Twisted Trees of Alticane are an unnerving grove of Quaking Aspen, apparently mutated from a single source, giving them a twisted and unnatural appearance.

Dr. Farid Mattar's Monument of Peace.

Shop the world's largest number of ice cream flavors, ranging from delightful to downright bizarre.

Known as one of the most famous parks in Honduras.

This incredibly diverse research station is one of the largest tropical botanical gardens in the world.

Remote Honduran Islands with a colorful history.

These Honduran caves earned their magical nickname thanks to reflective bone deposits.

A replica of an early 19th-century vessel that sailed across the world.

This ancient limestone cave system contains many impressive geological features.

A waterfall rushing through a lush fern gully in Australia's Tarra-Bulga National Park.

It's said that visitors can "see" Tasmania inside this cave.

This Australian beach became famous when Prime Minister Harold Holt disappeared from its shores.

These 400 million-year-old caves feature honeycomb limestone formations.

This large lake in Central Australia contains an estimated 600 million tons of salt.

An active seahorse farm is currently saving Tasmania's handfish from extinction.