Step into the cool deep past and unknown future of who begat who.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Housing a morgue, rare and confiscated weapons, and autopsy remains, the Vancouver police museum displays the dark side of Canada.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Mile-long cave system near Great Smoky Mountains.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

An underwater city for the dead.

This quirky curiosity shop takes its cues from the world's bazaars.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

Oldest unrestored plantation house in America that is open to the public.

Paths are maintained, but trees have taken over plots.

One of the oldest living oak trees in the Southeast.

Try not to get slimed in Tribeca.

Avoid gangster interaction while window-shopping.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Famous church recognized for both its unique design and disciplined monks that live according to the Benedictine discipline.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

This battery powered bell has been ringing since 1840 and is one of the worlds longest running science experiments.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

This zoological museum began as the first great curiosity cabinet.

The mummified relic of St. Catherine sits forever on a golden throne.

Abandoned cemetery of the former Psychiatric Hospital of Volterra.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

A Nesting Doll of Churches.