Bethesda, GB
Jerusalem Chapel, Bethesda, Gwynedd, Wales is a Presbyterian Church of Wales chapel built in 1841–1842 and reconstructed in 1872–1875. Of colossal size, the chapel can accommodate 980 people in its horseshoe amphitheatre. Still an active chapel, it is a Grade I listed building.
Listen to the audio guide for Jerwsalem Chapel Free on WIP — starts by itself when you arrive, even with the screen off