The Athens Happy Train is a very economical way to visit the main attractions of the Greek capital, and is especially popular among children. It is a tourist train, like a toy, which offers one-hour walk around the city. Tickets are priced at 6 euros for adults and 4 euros for children. The train leaves from the top of Ermou Street, Syntagma Square in Monastiraki Square and near the metro station, and is open from 10.00 to 17.00.