Seven lesser-known wonders of the world: hidden architectural marvels

The Great Mosque of Djenné is a world-famous example of Sudano-Sahelian architecture, a massive adobe structure that is the largest mud-brick building in the Islamic world and one of Africa’s most iconic landmarks (Photo by FRANCOIS XAVIER MARIT)

Derawar Fort boasts 40 impressive bastions standing tall in the vast desert. The fort’s thick walls span a circumference of 1,500 meters and reach a height of 30 meters. This highly monumental structure is not even fully understood by residents of Pakistan (Image source / Wikipedia)

Rani ki Vav, located in Patan city, Gujarat, India, played a vital role in India’s water storage system between the 12th and 14th centuries, reflecting the high level of craftsmanship among Indian artisans at the time. Its exquisite technique, intricate craftsmanship, and exceptional detail and proportion make it a model of elaborate multi-tiered art and architecture (Photo by Victoria Lautman)

Kumbhalgarh Fort is located in southern Rajasthan, 64 kilometers north of Udaipur city. The fort’s wall extends 36 kilometers, making it the world’s second greatest construction after China’s Great Wall, with walls about 4.5 meters thick (Image source / Wikipedia)

The Ziggurat of Ur is located in southern Iraq and was built during the Sumerian dynasty in ancient Mesopotamia as a temple dedicated to the moon goddess Nanna. It has a history of over 4,000 years (Image source / contemporary vietnam)