Birley Spa is a community bath hall and a Victorian bathhouse in the Hackenthorpe district of the City of Sheffield, England. It is a Grade II listed building.
History
thumb|left|The rear elevation facing north
The bath house was commissioned by Charles Pierrepont, 2nd Earl Manvers, who was the lord of the manor of Beighton as a hotel with spa baths beneath. The site he selected, in the Shire Brook Valley, was built into the hill on the south side of the valley. It was designed in the neoclassical style, built in brick with a cement render and was officially opened in 1843.
By the time of the 1920s and 1230s, the grounds of the bath house were transformed into a pleasure ground for children. Mr Moulson and William Smith were the proprietors at this time. The grounds featured a wishing well, a sand pit, swing boats, and a paddling pool. The large lake behind the house was used for boating and fishing. There was also a 'wonder tree' in the wooded area beside the house, which was a large oak tree said to be over 1,000 years old. When the Second World War began in 1939, the grounds were closed.
The grounds was transferred to Sheffield Corporation in the 1950s, and in the early 2000s it became part of the Shire Brook Valley Local Nature Reserve.
The building was restored in 2000/2002 and for a time was open for tours by the public, but this had ceased by 2014. In June 2018, there was renewed interest in the building after the council announced its intention to sell the building. The sale was later withdrawn and the building became an asset of community value.
In May 2025, the Victorian Society included the building in its list of the 10 most endangered buildings in the country.