The modern Baptistery of St Lydia is an octagonal church beside a shallow stream about two kilometres east of the Philippi site, near the village of Lydia (Greek: Λυδία). The church was built in 1974 and is more interesting for the setting than for the architecture: a clear cool stream, large plane trees, a stone-built outdoor baptismal pool beside the church, and a relentless succession of pilgrims and busloads of Greek school groups.
The church is open daily. A small chapel and the open-air baptismal pool are the two stops. The walk along the stream from the church up towards the original Philippi site is a pleasant kilometre on a hot summer afternoon.