A giant Troll lurks under one of Seattle's oldest bridges.

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

The ghostly remains of an accidental sea.

A hand-built folk art installation covered with messages of God's love.

An artsy hidden staircase leads to breathtaking views of San Francisco.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

A toxic ghost town sitting atop a massive coal fire.

An emerald-green grotto just a short trip from Austin.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

Once the most painted on object in the world, this short campus fence is well on its way to being so again.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

There aren't too many operational funiculars around, but Pittsburgh has two!

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

America's most famous piece of self-built architecture.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

One man's prolific, decade-long quest to turn trash into artistic treasure.