It is the first time a national British institution has agreed to serve coffee which bears the official FairtradeMark label guaranteeing a fair deal for plantations in developing countries.
Retailers add their own enormous mark-ups to Fairtrade products and mislead consumers into thinking that all of the premium they are paying is passed on.
The visitor and heritage centre replaces Garstang's Discovery Centre in High Street and will also mark the start of the Fair Trade Way, a heritage trail that links Fairtrade towns between Garstang and Keswick.