Pompeii is an important town as it has an incredible amount of information on ancient Roman civilization. Historical sites around the world often have specific layers which tell Historians and Archaeologists about its past. Cities often build on the remains of old houses or walls, meaning each layer is for a certain time period. However, as the years progress and new eras are formed, certain elements of a city may be altered while others remain the same. In ancient Roman cities, building materials have changed over time, but without evidence of the initial materials, we cannot determine how things have progressed. The addition of new items and buildings also destroys older places, resulting in some information being lost forever.

Although other cities were buried in the eruption of Mount Vesuvius, Pompeii is the easiest to excavate. Herculaneum, a nearby town, also has a wealth of information, but is buried under 20 meters of volcanic materials while Pompeii has only 6 meters. Pompeii is thus the ideal town for excavation. A number of mosaics, frescoes, wall writings and architectural features from Pompeii have been uncovered and some have even been preserved and put on display in museums.