North West contractor Globe Construction has completed a refectory building at Stonyhurst College, near Clitheroe.
The 15,300 sq ft dining facility, on the grounds of the 400-year-old private school, has opened to students.
It is expected that an official opening ceremony will take place on 28 February with local chefs Nigel Howarth and Paul Heathcote in attendance.
The refectory features solar-powered hot water and under-floor heating generated from water to water heat source pumps fed from the school's existing water supply.
In addition, the building's double-height windows have opened up views across the western approach to Stonyhurst.
David Billington, director of Globe Construction, said: "Stonyhurst is well-known for its striking grade 1-listed premises and the design has allowed us to deliver a building that stands as an addition to its historical surroundings, rather than in competition.
"The quality of the new development was paramount and we are extremely pleased with the high-spec finish achieved by the team. We hope that pupils, staff and visitors will enjoy using the new refectory for many years to come."
Andrew Johnson, headmaster at Stonyhurst College, said: "We are absolutely delighted with this new facility, which will enhance the lives of all our pupils. I particularly like the wonderful views across the ponds to the grounds beyond."
The building was designed by architects Cassidy & Ashton.