This war memorial holds the remains of around 20,000 World War I soldiers from both sides of the conflict.

An archaeological treasure trove towers over the valley of Chiavenna.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

Go surfing on this urban wave, "hacked" by local surfers.

The only substantial part of Nazi Germany's formidable defensive line through Northern Italy that survives today, largely intact.

A young Italian couple has been locked in an embrace for over 6,000 years.

This beautiful site is where the first transatlantic telegraph was sent from.

A sunken idol welcomes parishioners to Davy Jones' Locker.

Anatomical cabinet holds unexpected treasures.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

One man's quest to fix his toilet unearthed over 5,000 artifacts spanning more than 2,000 years of history.

The link between these two seemingly disparate themes is crucial to the history of this Tuscan hill town.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Where the lovelorn find a home for their sentimental keepsakes.

Humble beginnings for one of the world's most famous scientists.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Monasteries on rock pillars, once accessible only by frayed ropes.

The atmospheric road was never meant to be so creepy.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

Venice's "Island of the Mad."

The only museum with its curator—and her pets—buried inside.

Where Venice's gondolas go for a tune-up.