his splendid stupa and monastery were constructed by the monarch Mahasen and may be considered to be one of the most impressive religious sites in Sri Lanka. In fact, at the time of its completion, this vast stupa was amongst the tallest buildings on the globe, surpassed only by the Giza pyramids in Egypt. The Jetavanaramaya stupa was constructed using bricks composed of clay and sand, and stands as evidence of the remarkable engineering skills of the ancient artisans who constructed it. This stupa is believed to contain a sacred relic, a sash worn by the Buddha, and remains a noteworthy Buddhist monument to this day.