The city had a vast number of monuments like the Colosseum, the Roman Forum and the Circus Maximus. Innovative piping systems called aqueducts carried fresh water to fountains and bath houses. Bath complexes complete with libraries and shops were often busy public centers. Not only did they have running water for bathing, the Romans also developed functional sewers to carry away waste. Theaters, gymnasiums and marketplaces provided for all of the people's wants and needs and created a true sense of community. Across the territories that would shortly become a part of the Roman Empire, the impressive Roman architecture, ranging from very modest houses to country villas, was far above its time. In Rome, the capital city, the low and middle classes lived in the city centers equivalent to modern ghettos, while on Palatine Hill the imperial residences sat overlooking the city. From Palatine Hill we get the word palace and as shown in this picture a true sense of the grandeur of Roman architecture.