Parking garages (or multi-level car parks) are buildings of concrete and steel. They are used for parking vehicles. Some are built on downtown city streets where on-street parking slots may be limited. Parking garages are usually several levels high. The levels are connected by ramps. Many parking garages are open to the weather. They can be cold, snowy, and windy in the winter. Sometimes the street level of a parking garage has shops, cafes, and other businesses.