Made during the time of Augustus around 27 BC, the Pantheon was an early imperial temple built by Marcus Agrippa dedicated to all of the pagan gods of Rome that serves as an excellent example of Rome’s transition from a city of bricks to a city of marble. Not only is its dome the only surviving example from this period, but, as the Roman Empire was a master of concrete, it also served as an example for domes that were built later, using lighter material toward the top of the dome. Within the structure, there are seven capelle, likely for statues of gods, though their exact original purpose is not known today. The temple burned twice, the final time in 110 AD, and between 118 and 125 AD the emperor Hadrian rebuilt it and dedicated the structure to Agrippa, as indicated by the inscription across the front. Later, the Pantheon became the first Roman temple to be appropriated as a Christian church when it was given to Pope Boniface IV in 608 AD, and it continues to serve as a church today as well as Rome’s best preserved, longest-standing complete temple.