Model trains are miniature replicas of real trains, designed for hobbyists and collectors. They come in various scales, such as HO, N, and O, which determine their size relative to real trains. Model trains can be powered by electricity or batteries and are often used on detailed layouts that mimic real-world landscapes, including buildings, trees, and roads. Many enthusiasts enjoy building and customizing their own train sets, creating intricate scenes and operating them on tracks. Model trains can also be part of clubs or exhibitions, where collectors showcase their collections and layouts. This hobby promotes creativity, engineering skills, and a sense of community among fans.