The Most Expensive 8 Buildings in the World Determining the exact cost of a building can be complex due to factors like inflation

The Great Mosque of Mecca, Saudi Arabia Estimated cost: $100 billion. A colossal religious site that can accommodate millions of pilgrims.

Abraj Al Bait, Saudi Arabia  Estimated cost $15 billion. A towering complex in Mecca, including a luxury hotel and the world's largest clock tower.

Apple Park, California, USA  Estimated cost $3.9 billion. A luxury hotel and casino on the Las Vegas Strip.

Wynn Palace, Macau A masterpiece of opulence and luxury, Wynn Palace is a $4.2 billion casino resort that redefines extravagance. Nestled in the heart of Macau,

Resorts World Sentosa, Singapore  Estimated cost: $4.93 billion. Another impressive integrated resort in Singapore.

One World Trade Center, New York City, USA Estimated cost: $3.8 billion. The tallest building in the Western Hemisphere.

Marina Bay Sands, Singapore Estimated cost  $5.7 billion. An iconic integrated resort with a unique sky garden.