The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

A beautiful 62-acre Catholic shrine and botanical garden.

The magic's in the hole!

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This elaborate towering structure was once famed for its revolutionary height.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Vibrant street art created with mixed media.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

Stuck in the middle of a modern Madrid city block are the remains of a 19th century sports complex.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Secret refuge and museum of the Duke of Florence.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The mark of the Devil's horns on a marble column in Milan.

Two stone columns flank the grand Venice square, but there were supposed to be three.

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

Where Venice's gondolas go for a tune-up.

100 year tradition of fist fights, marked by marble footsteps.