Go inside to really appreciate this 500-year-old technological masterpiece.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

This Czar-funded, onion-domed, lavishly muraled Orthodox Church played a starring role in "The Deer Hunter."

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

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.

Dispersed across 45-acres, 39 structures house a massive collection celebrating American Folk Art.

The birthplace of America's favorite fruit-flavored mystery dessert.

This museum is dedicated to a Hollywood icon.

Two distinctive homes on a New England village green look like a couple of frosted wedding cakes.

A perfect replica of the beloved show's first set.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

Large Hadron Collider and the Birthplace of World Wide Web.

Claude Monet was baptized in this lavishly ornate Paris church.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

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

This educational and eco-friendly community is Iceland's "home of the sun."

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

Iceland's tribute to its thankless civil servants.