The Toxteth Unitarian Chapel, also known as the Ancient Chapel of Toxteth will open to the public as part of Heritage Open Days.
The Grade I listed building was built by local Puritan farmers who later added a chapel in 1618.
The Toxteth chapel congregation has had a number of significant Liverpool citizens as members.
Jeremiah Horrox, the astronomer was born in Toxteth Park in 1619 and was the first astronomer to predict and chart the transit of Venus across the Sun.
The school master Richard Mather became the school master aged just 15 years and after going to study at Oxford, later returned and became the minister.
A 17th Century drawing shows how the original school building and chapel were joined together.
A copy of the indulgence granted and signed by King Charles II in 1672.
A number of significant Liverpool citizens are buried in the chapel's graveyard including members of the Rathbone, Holt and Melly families.
Members of the Holt family who were active in local politics and education are buried in the chapel grounds.
A plaque was added to the chapel entrance at the end of World War I.
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