You still have one more chance to see the inside of the enigmatic St. Andrew’s Chapel, the beautiful church at the corner of 42nd and Spruce that hasn’t been regularly open to the public for 40 years.

Earlier this month the chapel hosted the temporary art installation “Ci-Lines” by Aaron Asis. The installation’s closing on Saturday will include “Stories of St. Andrew’s,” a discussion featuring three experts on the history of churches in the city.

St. Andrew’s was built in 1923 by the Philadelphia Divinity School to educate Episcopal priests and has not been open to the public since 1974. Learn more about the church’s history during the talk, which runs from 4 p.m. to 5 p.m. on Saturday.

Speakers will include:

• Davis d’Ambly – A liturgical artist who has worked in churches all over the city.

• Michael Krasluski – A librarian and professor at the University of the Sciences who curated the Philadelphia Studies blog, which tells the history of the city’s Episcopal churches through parish archives.

• Bob Legani – A member of the last graduating class of the Philadelphia Divinity School and a sacrastan who prepared the chapel for daily services for three years.