This historic black and white monastery is one of Bulgaria's architectural jewels.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

Nature took her revenge on the "Wickedest City in the World."

A 16th-century Andalusian palace.

The final resting place of the great navigator, or maybe his brother.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This tile-work piece featuring a chicken riding in carriage is both a remarkable artistic creation and a social commentary of politics and culture in 17th-century Portugal.

This once-forgotten oasis in the middle of Lisbon was first created over a century ago quite by accident.

The scorched Lisbon church that survived two earthquakes and a massive fire.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

Plot your trip through the city on the sidewalk.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.