These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

A once grand hotel is being retaken by the wilderness it once capitalized on.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

An expansive book store, art gallery, and curio shop with wares ranging from tarot cards to novelty socks.

The only road through the heart of Glacier National Park.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Long-forgotten artifacts give incredible insight into New York's most glamorous hotel.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

The fifth-longest natural arch in the world, and the longest outside China.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The southernmost outpost of the Russian Empire in colonial America.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

Hopeless romantics will swoon over the sweet story behind this bright and colorful home.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A collection of colorful dinosaurs hidden in an actual rainforest.

Tiny horses tethered to antique rings are scattered around the city.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

Home to the deepest rift anywhere on Earth.