Széchenyi Hill is a picturesque spot in Budapest that serves as the starting point for the Children's Railway, a unique attraction run by kids. The railway winds its way through the Buda Hills, offering a scenic journey with stops at lookout towers, forest playgrounds, and other attractions. It's a fun and educational experience for both train-loving adults and children, with the option to ride a steam locomotive on selected days. Plus, there's a cool museum at Hűvösvölgy station showcasing the history of the railway. So, if you're looking for a fun day out exploring nature and history, the Children's Railway is definitely worth checking out!