This historic California cemetery holds the bodies of veterans of both the Civil War and the Donner Party.

A rough granite monument marks the spot where Europeans first caught sight of the San Francisco Bay.

This little museum has an exhibit devoted to the elusive forest denizens.

A church of bones, decorated with 40,000 human skeletons.

Everyone and everything one man ever loved and lost, now stare into the East for all eternity.

These Pre-Columbian petroglyphs contain representations of birds, deer, hunters, and even some early Native flute players.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

Huge standing stones mark a site of megalithic mystery.

Putrefaction plateaus in Iran, where the dead were sent for decontamination before going to their final resting place.

Unique Michigan homes look like something out of Tolkien's "The Lord of the Rings."

The vast, legendary catacombs hold secrets much stranger than stacked bones.