Built in 1900, the gymnasium at Haverford College holds a prized location across from Founders Hall on the main quadrangle of the small liberal-arts school’s wooded campus, eight miles northwest of Philadelphia. Like many of the earlier buildings at the now nonsectarian institution, founded in 1833 by the Society of Friends, the beautiful stone structure reflects Quaker architectural principles of utility, balance, and simplicity. Its recent transformation into an arts hub reflects a complementary principle: first, do no harm.