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

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The spot where the namesake of the Douglas fir met his mysterious end on a Hawaiian volcano.

A priest with no formal artistic training used basic house paint to create gorgeous religious scenes inside this historic church.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

Watch the newest land on the planet form before your eyes.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

The unbelievably opulent home built for an infamous newspaperman.

The same family lived in this Victorian house for nearly 100 years without altering the building.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

The celebrated eyesore created by starry-eyed sweethearts.

Claude Monet was baptized in this lavishly ornate Paris church.

The video game-themed street art first popped up in the French city.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

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

Paris' linguistic guide to the international language of, yes, love.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.