The unbelievably opulent home built for an infamous newspaperman.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

San Francisco's newly reopened hands-on science museum.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Home to items never before seen by the public.

A beautiful geyser under environmental threat.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The first declared National Monument in the United States.

This massive redwood tree has a hole in the base big enough to drive through.

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

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

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

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.