According to the British Daily Mail, people can have a close contact with 8000 well-preserved mummies which dated back to hundreds of years ago when walking on the gravel basement in an mysterious Catholic catacombs. It sounds a little like a shocking plot in horror movies, but in fact, it is real. Currently, the Catholic underground tomb in Palermo, Sicily, Italy attracts thousands of tourists from all over the world coming here for the mysterious mummies.