This simple highway curve has become a comedic pilgrimage site.

This beautiful ridge-top trail is dotted by tiny homes apparently built by a group of itinerant fairies.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

The oldest standing structure in downtown San Diego.

Oldest building in California still in use.

An inconspicuous footbridge beloved by San Diego locals.

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.

Spend a day hanging out with domesticated Russian foxes.

This unique sanctuary invites you to interact with the beautiful birds.

The overgrown ruins of a once thriving World War I-era copper mine.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

A world-class observatory in the California desert.

This large collection of tiny things revels in the art of fine machinery well made.

Sojourn to the past at this residence teeming with 1950s memorabilia.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This grubby wall is said to be one of the Earth's esoteric energy centers.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Poland's oldest salt mine has nearly everything one needs to live underground forever.