The Ruwanwelisaya is one of the greatest Stupas in Sri Lanka & the world built in 167-137 B.C by King Dutugemunu which measured around (310ft) 103 meters in height with a circumference of 287 meters and is one of the wonders of the ancient world and one of the world’s tallest monuments that considered a marvel for the architectural qualities.How was this built 2150 years ago???
