The catacombs, a network of dark and narrow underground ... in the catacomb underneath the Basilica of San Lorenzo Fuori le Mura, near the tomb of St. Lawrence, a deacon martyred in A.D. 258.

Rome, the indisputable "Eternal City," continues to entertain and awe visitors millennia later. Today, tens of millions of people visit the city center to see some of the planet's finest ruins ...