Llanberis Lake Railway
5 Miles of wonderful railway around the lake that takes around 60 mins. Steam locomotives run all day. Lots of special events for all of the family.
Their website includes photos, video, history of the site and details of the running times and special events.
Trip Adviser: http://www.tripadvisor.co.uk/Attraction_Review-g186448-d295853-Reviews-Llanberis_Lake_Railway-Llanberis_Snowdonia_National_Park_North_Wales_Wales.html