A breathtaking viewing platform over the Alps.

The world's oldest known salt mine.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

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

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

Known as the Sistine Chapel of Egypt, this tomb houses some of the most well-preserved paintings in Egypt.

Ozymandias’ time-keeping temple.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

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

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

This modest marker near Notre Dame identifies the very center of Paris.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

France's most famous cemetery, with some of its most curious tombs.

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

This beautiful, historic church looks like something out of a simpler past.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

A hundred copies of Antony Gormley's naked body stare out across the water.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.