Vertical circular multi-story parking garage image

Quick answer：

A vertical circular multi-story parking garage is a type of parking structure designed to maximize space efficiency by using a circular or spiral ramp system. Cars are parked in a vertical orientation, moving up or down the ramp to reach their designated parking space. This design minimizes the need for long horizontal spaces and allows for more parking in a smaller footprint. Such parking garages are commonly used in urban areas where space is limited.