Garden railroading mixes large scale model railroading with all the challenges and delights of gardening, water gardening, and landscaping. What doesn't always mix so well with a naturalistic setting is 110v AC "house current" power (or 240v "mains" outside the US) . Even low voltage wiring is more complex outdoors than it is indoors. Unlike indoor railroading: Routing permanent power to a garden railroad frequently involves burying cables or other labor-intensive operations. Large scale locomotives require more amperage than indoor trains. Large scale railroads typically have longer track runs than indoor trains, making it more complex to get power to the far end of the railroad.