The tree is thought to be the oldest oak in Texas and was once crowned state champion for its monumental size.

Official museum, hall of fame, and repository of the Texas Rangers.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

Foragers once flocked to this big beautiful bayou to hunt for pearls.

This vintage animatronics show is the Vegas version of a walk through the woods.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A Japanese cat island also populated by the descendants of a band of banished samurai.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.

A local dialect born in the late 19th century is only spoken in this isolated California valley.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

An architect transformed this abandoned cement factory into his castle-like workshop.

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

This 700-year-old street food market features baby octopus and soy donuts.

The remains of the first punk club in L.A.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A small Richmond island dotted with the remnants of hundreds of years of history.

This historic mansion was built as a symbol of love between a husband and wife.

America's first public mental health facility.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

There's a crumbling old mansion inside the Smithsonian National Zoo.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.