Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

A daily pyrotechnic celebration marks a beloved tradition during Valencia's festival season.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

This house's itty bitty size means no humans allowed.

This sculpture in Valencia features 22,000 tiny, obsidian blue figures that pay homage to the Lady of Elche.

The magnificent sanctuary is Spain's first purpose-built structure of its kind.

For many years, the origin of these enigmatic artificial caves was the subject of debate among historians.

This decorative arch symbolizes the history of this medieval village but still maintains a modern purpose.

Locals use these rock pools and waterfalls for swimming and cliff diving.

The only quarter of the Old City not dedicated to a major world religion.

Oldest Protestant church in the Middle East, designed to resemble a synagogue.

This unassuming oasis elevated just above the busy streets of Jerusalem offers one of the best views of the Old City.

Iran's "Rose Garden Palace," built during 131 years of rule by Qajar kings, consists of 17 stunning structures.

17th century mosque for Shah Abbas' harem.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

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

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

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

This ancient burial site is believed to be one of the first earthquake-protected structures in the world.

The colorful soil of Iran’s "Rainbow Island" attracts artists and nature lovers.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

The largest tea plantation in Southeast Asia supplies gorgeous vistas alongside tea for the surrounding countries.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.