Three-dimensional flower bed in reality

Quick answer：

A three-dimensional flower bed, also known as a raised bed, is a garden feature that is elevated above the ground. It is designed to provide better drainage and to make plants more accessible for maintenance. These beds are often used in residential gardens and public spaces to create visually appealing displays and to accommodate a variety of plant species. They can be constructed using materials such as wood, concrete, or bricks and can be designed in various shapes and sizes.