At a height of almost 400 feet (120m), it is the tallest stupa in the world, largest brick building ever built, and 3rd largest structure in the ancient world, after the two largest of the Great Pyramids of Giza. Approximately 93,300,000 baked bricks were used to build the stupa. The compound covers approximately 8 acres (5.6 hectares). One side of the stupa is 576 feet long, and the flights of stairs at each of the four sides of it are 28 feet wide.