Trainspotting, also known as railfanning or train watching, is a beloved pastime of enthusiasts around the world. People who enjoy this hobby observe and document trains as they make their way through rail networks. Synonyms for trainspotting include train geeking, railfanning, locomotive spotting, train chasing, and trackhounding. While the activity may seem niche, trainspotting has a devoted fan base and is a popular hobby in many parts of the world. It allows people to connect with history, engineering, and transportation in a unique way, and is often accompanied by an appreciation for the sights and sounds of trains in motion.