This building is over 200 years old. It is maintained by a charity and volunteers. It demonstrates some interesting thinking, and an interesting engineering solution to make the canal viable at the time. The pumps are active on certain days of the year, such as the steam fare. If you like steam powered engines or serious industrial engineering, this is perfect. Fantastic to see the working engine. There's a lovely café, but if you're going with a family it may even be worth having a picnic.