An exotic wildlife habitat right off The Strip.

A collection of haunted objects and macabre oddities under one roof.

A homage to the King at the hotel where he revived his career.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.

This unusual lava tube spouts seawater during high surf.

A unique set of caves that spits waves back out into the ocean.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

An ode to one of the first concerts broadcast via satellite.

Hawai'i's oldest wooden house was shipped around Cape Horn from Boston in 1820.

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

Once the site of the Hawaiian monarchy, this building was originally designed as a palace.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This historic hotel invented the chocolate brownie.

This Italianate Villa-style castle is pretty to look at, just keep off the private property.

This abandoned prison castle has become an imposing gallery of graffiti art.

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

This recently restored timepiece has stood all around Kansas City.