Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

This leafy estate is worth $18 million and is so grand it has two mailing addresses.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

Over 120,000 curious objects that have shaped our modern world.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

An ancient necropolis of magnificent tombs.

Considered the birthplace of the Copper Age and Bronze Age, the river is tinted red from 5,000 years of mining.

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

The forbidden island of the Tuscan Archipelago may still contain buried treasure.

This remarkable checkered church on a Corsican hilltop is fabled to have been built by angels.

This almost-forgotten underground dungeon housed several convicts over the years, including Caravaggio.

Dynastic Home of the De Piro Family.

Mysterious man-made rock piles form an ancient cemetery on this rocky beach in Norway.

Low tide reveals 8,000-year-old rock carvings in Southern Alaska.

Small church on top of a huge rock column.

A geological oddity topped with a 2,000-year-old pagan temple.

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

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