The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Named after a legendary garden called Eram in southern Arabia, built by order of Shaddad, an Arab king who wanted to compete with Paradise.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

The ancient necropolis houses the immense rock-cut tombs of four Persian kings.

Marked by the hand of the explorer Henry Morton Stanley.

The palace of the King of Kings, burned by Alexander the Great.

Long before air conditioning, Persian architects found an ingenious way to cool off.

The fire inside this temple has burned for more than 1,500 years.

The cathedral stands in New Jufa, Isfahan's Armenian quarter that was established in 1606.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

17th century mosque for Shah Abbas' harem.

Thrilling and delicious complement to any dining experience.

Tucked inside a South Bank bar is an epic expressionist chronicle of the 20th century.

A recreation of a sign that Charles Dickens used to see on his walk home.

A lasting remnant of the London Blitz.

Heralded as the oldest statue in London.

The canine-themed book collection claims to be Europe's largest dog library.

This peeling mural of Adam and Eve was inspired by the greenhouses at Kew Gardens.

This underpass became an unlikely piece of cinematic history after its appearance in 'A Clockwork Orange.'

Crafted by one of the first makers of stoneware in England.