This building papercraft diorma is Hill Valley, a fictional medium sized town somewhere in Northern California that serves as the setting of the Back to the Future trilogy and its animated spin-off series, the papercraft was created by aurélien.
In the trilogy, Hill Valley is seen in four different time periods (1885, 1955, 1985 and 2015) as well as in a dystopian alternate 1985. The films contain many sight gags, verbal innuendos and detailed set design elements, from which a detailed and consistent history of the area can be derived.
The name "Hill Valley" is itself a joke, being an oxymoron. However, an early script for Back to the Future Part II mentioned that Hill Valley was named after its founder, William "Bill" Hill. [Source: wiki]
You can download the papercraft model here: Back to the Future - Hill Valley Papercraft Diorama Free Download