Street is a sub-class of public thoroughfare in the built environment. It is a public parcel of land adjoining buildings in an urban context, on which people may freely assemble, interact, and move about. Streets can be paved or unpaved, and can include sidewalks, bike lanes, and other features. Streets are typically lined with buildings, but can also be used for recreational purposes, such as in parks. Streets are often the focal point of a city, providing a space for people to gather, shop, and interact.