If you'd like to know better the past and the present of Pisa, the visit to lungarnos is essential. Lungarnos are the streets of the city that pass beside the river Arno. They are well known in Pisa for wonderful buildings that go along with the river bank until they reach the river outlet in Marina di Pisa. Few centuries ago lungarnos were the heart of the city center, and that's why wealthy families had chosen this area for their residences. They were completely reconstructed in 1871, which sadly destroyed many stairs and flights of steps that were characteristic of this area. They are also important nightlife meeting places for Pisans. The lungarnos of Pisa inspired some famous poets and writers such as Lord Byron and P.B. Shelley.