Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

Go inside to really appreciate this 500-year-old technological masterpiece.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Slyly buy a shake in the Parker Meridien lobby.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Elevated freight railway turned wildly successful urban park.

An artist's cute bronze subway sculptures belie his violent artistic past.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This set of rickety spaceships are prepared to give alien travelers a place to relax and go to the bathroom.

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

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

One of the oldest living oak trees in the Southeast.

South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.