Stroll around the headstones of notable figures from Knoxville's history, as well as towering monoliths and melancholic headstones.

This chestnut box will not be opened until the country music legend's 100th birthday in 2046.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A historic dam made famous for its turbines and feature in a Hollywood classic.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

Before TV meteorologists, there were weather kiosks. This may be the last one in the United States.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

The most photographed house in Maine looks good enough to eat.

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

Despite its extensive history, this fort saw little to no combat.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The highway's southernmost spot is a beloved local attraction.

A historic presidential getaway on the continental United States' southernmost island.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

A mysterious castle built as a monument to lost love.

The world's largest version of this iconic puzzle cube is located in Knoxville, Tennessee.

These markers are used to document elevation changes around the famed dam.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

Experience a charming 1930's version of "infotainment."

This small interfaith chapel lies not far from the rim of the Grand Canyon.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.