With many pilgrims, Saudi Arabia's Mina Valley has become one of the most populated places in the world.
This case presents us with the solution to the housing problem of 3 million people in an area of 4km2.
Visitors can see the overall design of the Tent City, feel the original style of the world's largest man-made reservoir and learn about the advanced work done to protect the Tent City from sinkhole flooding.
