San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

A 300-ship graveyard, with a few still visible at low tide.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Would you like a sleeper hold with that?

When you can't get to the Pacific, just go to Florida.

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.

Location of a reliquary containing bone fragments of 18 saints.

This state park was once an important Native American cermonial center.

A perfect circle of twenty-four mysterious holes dates back to prehistoric time.

The world of the ancient Celtic civilization explained through a bewitching 11 acre garden.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

Ruins of the laboratory where a mysterious doctor invented an embalming fluid and stored his mummies.

The remains of Uruguayan hero José Artigas lie beneath a monument in Montevideo’s main square.

This historic fort overlooks Montevideo and appears on Uruguay’s coat of arms.

A monument to the conquistador became increasingly controversial in the very city that he founded.

A Christian monastery stands on what was once a holy Incan temple.

This archaeological museum in one of Peru’s most intriguing regions exhibits ancient artifacts from the Nazca civilization.

Peru's (not so) mysterious carved stones.

A highland eco-park celebrates more than a thousand varieties of tuber.

The outside of this exposed Moche pyramid is covered with striking colorful adobe friezes.

This well held a sacred source of water supposedly unleashed from the barren rocks by a wizard-like archbishop.

Thousands of volcanic rocks carved 1,000 years ago.

A circle of stones on a hilltop in Peru’s high jungle, aligned with the winter solstice and largely ignored by archaeologists.

These overlooked ruins give an intimate look at the Inca Empire's urban planning prowess.