Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

Located near Cairo's El Korba district, the abandoned mansion continues to inspire mystery and rumor throughout the city.

This unassuming tree stump reportedly traces its roots to the famous pharaoh queen's reign.

A network of ancient Egyptian tombs built into the cliff face along the Nile.

These Egyptian statues have survived for 3,400 years and were an acoustic wonder of the ancient world.

The United Arab Emirates's biggest and oldest fort pays homage to a lost era.

The world's largest frame offers spectacular views of the city's past and present.

This futuristic building is yet another architectural wonder in Dubai.

This indoor ski resort has a mountain contained inside a mall.

Billed as the "largest natural flower garden in the world" this Middle Eastern show field has little competition at 45 million flowers.

No building in the world leans as far as the so-called “Leaning Tower of Abu Dhabi.”

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

The world’s largest LED display, built over an F1 race circuit.

Whitewashed mosque contains the world's largest carpet.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.