Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

The highest bridge in America was built for an almost unnervingly small amount of money.

Curios, scientific antiques, oddities for sale.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

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

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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

A beautiful geyser under environmental threat.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

These ancient sacred grounds granted amnesty to those who managed to reach them.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

A six-ton wedding present for the King of the Scots.

Largest lake in Great Britain measured by surface area.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

A large circus museum with summer performances.

100-year-old shipwreck you can walk up to at low tide.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

This simple, broken column marks the final resting place of one of America's most famous explorers.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.