Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Spend the night in this formerly abandoned traditional Scottish village.

A magnificent, iconic stone tower in the Scottish Highlands.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

The 5,000-year-old megalith is believed to be Scotland's tallest standing stone.

A red-brick beacon stands against the tempestuous Atlantic, on the windiest site in the United Kingdom.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Museum preserving torture methods from the past.

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The carved medieval stones stand near the ruined abbey's parking lot.