Famously misunderstood wonder of the ancient world

Eighty million natural history specimens call this gargantuan museum home.

The world's oldest known salt mine.

This ship offers visitors the chance to spend the night aboard a former floating hospital for fishermen.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

This road winds through the steep coastal cliffside offering spectacular views for those who brave the drive.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

This African beach is home to thousands of rare mainland penguins that are known for their annoying voice.

This castle has links to Portugal’s founding and struggles for independence.

Building owners can take out tiles for free at this repository for historic building materials.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Elaborate tile work in this railway station tells the story of Portugal.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This elaborate towering structure was once famed for its revolutionary height.

Dr Barnes' $25 billion private collection of art and arboretum.

World's first "penitentiary," meant to be humane, drove men insane.

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.