An Oxford-based architect has won a competition to design a new extension for Cheltenham Art Gallery and Museum.
The extension will give the museum more exhibition space
Berman Guedes Stretton's entry was praised for its simple elegance and eco-friendliness, using reclaimed materials and natural ventilation.
The new development will increase exhibition and display space and improve visitor facilities.
Cheltenham Borough councillor Diggory Seacome said it would mean the museum would move into the 21st Century.
"Arts and culture are important to Cheltenham and are valued and appreciated both by its residents and by those who visit the town at all times of the year," he said.
"The RIBA Design Competition has given everyone the opportunity to examine all the possibilities and we look forward to progressing to the next stages of this important project with a design which has been so well-received."