• No prams inside: leave yours in the courtyard shelter through the Aleksanterinkatu 16 gateway, since Children's Town has no room for them
• Snack room with a microwave on the lower floor, so you can heat food and eat without leaving
• Museum grandparents on weekends in Grandma's House, among 1970s everyday items and TV shows of the time

Children's Town is the Helsinki City Museum's hands-on exhibition for young kids, set in Sederholm House, the oldest house in the city (built 1757). Kids climb into a horse-drawn carriage, take the wheel of a ship, play shop in an 18th-century store and sit in a 1930s classroom. Everything on display may be touched. Grandma's House shows 1970s everyday life, and toddlers get a marine play and reading corner.