Staff, volunteers and members of the public browsed a pop-up charity shop, took part in arts and crafts activities and enjoyed refreshments.
In the quarter of a century that the hospice has been open, it has cared for thousands of people affected by life-limiting and threatening illnesses and has had more than £9m raised for it by members of the community and more than £3m left in legacy donations.
On the day, Barnsley Central MP Dan Jarvis gave the opening speech, and said: “Barnsley Hospice do a phenomenal job in providing compassionate and specialist palliative care for patients and their families here in Barnsley.
“Providing this level of care means that the hospice is always looking to raise money.
“If you are able to support the hospice in any way whether that is through donating or popping along to one of the three Barnsley Hospice charity shops in the town centre then please do whatever you can.”
Hospice chief executive Julie Ferry said: “I am so proud of what we have achieved together in 25 years.
“The hospice wouldn’t be where it is today without the support of our fantastic trustees, staff, volunteers and fundraisers.
“Their support ensures we can continue to deliver specialist palliative care and support patients and families in Barnsley for many more years to come.”