Architectural monsters are devouring this palace's every door and window.

The final resting place of the poets Shelley and Keats.

The underground sanctuary of a mysterious ancient cult.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The largest masonic lodge in Cuba.

A colossal statue with a controversial past, forgotten for more than 30 years.

The Cuban revolutionary looks over the country from its highest peak.

Standing in this historic plaza is a statue representing one of Cuba's most iconic literary characters.

A small museum in the Bay of Pigs gives the Cuban perspective on the famously failed U.S. invasion.

A cemetery full of exquisite statuary, including a monument to a woman some say died of a broken heart.

This imposing memorial contains the remains of Che Guevara — and 29 other guerrillas who died with him in Bolivia.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

A bronze sculpture of Lenin’s likeness outside Havana surrounded by 12 human figures in solidarity with the Bolshevik Revolution.

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

This Transylvanian church has changed its denomination four times.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."