One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The longest navigable underground river in the United States is home to countless blind and albino animals.

Vikings and Evangelicals have both had a hand in this replica medieval church.

The oldest house in Chicago certainly doesn't look the part and there are some who say it doesn't deserve its title either.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

World's largest Christmas store.

A town filled with hot chocolate, dazzling lights, and lots of Christmas cheer.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

This historic lavatory leftover features two levels of defecation stations completely without context.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

This tiny historic jail along Route 66 is the perfect fit for exactly one criminal and their partner-in-crime.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

Today this bizarre rooftop phone booth seems like a piece of kitsch but it was once used to spot disastrous storms.