Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

The bears of Bern have been a city highlight for over 500 years.

A museum dedicated to the centuries-old cave dwellings that housed marginalized communities on the outskirts of the former capital of Muslim Spain.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A forgotten "city of water" underneath the famous Trevi district.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This floating sculpture of ice is a poignant reminder of nature's power.

A shrine contains nearly 200 statues of the Buddhist deity Jizo, dressed in bibs by parents who have lost a child.

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The quintessential Japanese rock garden has existed for more than 500 years.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

This 14th-century temple is also known as the "Temple of the Golden Pavilion" for its gorgeous gilded reliquary hall.

A lush indoor jungle fills this bustling Madrid transportation hub.

This chimerical bridge/tunnel appears to dead end right into the sea.

A winding path built in secret on the edge of the continent.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

A second generation sun-powered marvel lights up the night.