Build a false mountain and fish pond on the rooftop

Quick answer：

Building a false mountain and fish pond on the rooftop can create a unique and serene space. This type of rooftop garden requires careful planning to ensure structural integrity, water management, and maintenance. It often involves the use of artificial rocks and pond liners, and can incorporate water features such as waterfalls or koi ponds. Safety measures must be taken to prevent leaks and ensure the stability of the structure.