Rome is one of the best places in the world with incredible architecture, buildings, and monuments. Most of these building have been standing here for centuries and offer amazing sightseeing experience for visitors and tourists. Here are 10 most impressive buildings in Rome. This magnificent edifice was constructed by Hadrian as a mausoleum. Even though it is now a museum and tourists attraction, the place has served many purposes in the past including papal residence, fortress, and military prison. Click the next ARROW to see the next photo!