Surprising Facts about Famous Landmarks You Never Knew

7

Underground tunnels under the Roman Colosseum

GettyImages

A vibrant Roman history that dates centuries back is infused into this place. However, when the surface was scratched and excavation was carried out by archaeologists and historians, some mind-boggling discoveries were unearthed beneath the arena floor. Among these findings are a series of intricate tunnels famously referred to as the "hypogeum."