This constitutionally sound Muffler Man harkens back to the days these attractions were a must-see.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

This architectural triumph is the only Frank Lloyd Wright house in Alabama.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

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

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Largest lake in Great Britain measured by surface area.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The most loyal of little dogs, or a Victorian era publicity stunt?

A sweet symbol marks the place where torturous executions were once carried out.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

The "lovely red Vega" of the legendary record-settling pilot.

Home to items never before seen by the public.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A toweringly silly piece of modern art has been delighting locals since the 1980s.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.