A massive sea stack famous for its appearance in The Goonies.

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

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

The grandson of a Kiowa chief created what has become the iconic symbol of a city on the Plains.

This 17th-century mausoleum is topped with an acoustic marvel.

The remnants of an early American attempt at missile defense.

Mai Tais and Navy Grog served up in one of the original tiki bars.

This angular brutalist playground turns playtime into modern art time.

True to its name, this bouncy walkway may be the world’s smallest suspension bridge.

One man's swirling six-acre monument of stone.

Memorial to a beloved puppeteer as well as all street performers.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

This is the house that spite built.

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

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

The biggest museum dedicated to insects in North America, one of the largest in the world.

This 1967 experiment in modular architecture was designed to be a new model for urban living.

This historic hotel invented the chocolate brownie.

New Plymouth, Idaho is the only U-shaped town in the United States.

This collection of over 50 classic pinball machines awaits visitors to downtown Roanoke.

Built to ward off Napoleon's army, this city-sized abandoned Russian fort is now perfect for urban exploration.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

A colorful architectural gem in Seattle's uniquely modern Central Library.

The boulder on which Alexander Hamilton laid his head after a deadly duel can still be visited on the New Jersey coast.