This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

Explore the five senses depicted on this protruding Gothic window.

The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

The most impressive of Basel's three remaining city gates.

This 42-foot tribute to the workforce still reminds us to pause and recharge.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

This artistic fountain display pays homage to this area's theatrical history.

A futuristic rocket marks the spot where three borders meet.

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

Babe Ruth and others planted saplings for a 1930s tourism campaign. The saplings grew as the area faded.

This work of public art symbolizes the maritime history and the modern creative industry in Fremantle.

Hundreds of people walk past this palm tree every day without spotting its secret.

A beloved statue of a diving woman in Perth’s Swan River is frequently dressed up in costumes for special occasions.

Hitch a boat ride to dine on stilts while watching wildlife.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

This unique religious structure is an architectural gem with arresting ocean views.

This giant statue is the product of a mixture of corruption, Stalinist architecture, and North Korean manpower.

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

Breathtaking and huge 430 year old maps of Italy.