Shrewsbury Castle has been taken over by popular bar Oil for the last two weekends, offering pizzas, craft beers, cocktails and a "chilled out vibe" in the grounds.
It is hoped more businesses will be able to make use of the space throughout the summer, and firms are urged to get in touch with Shropshire Council to enquire.
Oil to the Fort will be held for the next three weekends until Saturday, May 15. It is open on Fridays from 5pm-11pm, and on Saturdays from midday to 11pm.
Hayley Owen, Shropshire Council’s growth programme manager, said: “Oil to the Fort has managed to bring outdoor hospitality to the most stunning setting, and if the first two weekends are anything to go by then this will be seriously popular.
“It is great to see a Shropshire business adapting and bringing a fabulous vibe to the town as we aim to bounce back as soon and as successfully as possible.
“This really is one not to miss.”
Seb Slater, executive director of Shrewsbury BID, said: “We are really pleased that Shropshire Council has enabled the castle grounds to be used in this way as part of the town’s recovery.
“The castle is a wonderful heritage asset for the town where people can enjoy spending time with family and friends safely, and we look forward to more local businesses making use of the space throughout the summer and beyond.”