Rome is a city with layers. Literally. Stretching back thousands of years, the ancient Italian capital has been built and rebuilt, sieged and sacked, and rebuilt some more. Its history is linked to countless world-changing events over the past 2,500 years, intricately connecting it to the entirety of Western civilization. (They don’t call it the Eternal City for nothing.) Wandering through Rome and you little stumbled upon everywhere you go as there’s some ancient column or area that built...