St Andrew's is the oldest and largest church in Plymouth, a handsome 15th-century minster on the edge of the Barbican. The building survived the Blitz as a roofless shell — you can still see the fire damage on some of the stonework — and was completely restored and reconsecrated in 1957.
The interior is notable for its six large stained glass windows by John Piper, installed as part of the postwar rebuilding and among the best examples of his work. The church is associated with several notable figures from Plymouth's history, including Sir Francis Drake, who worshipped here, and the family of Admiral Blake. Worth stepping inside even if you're not a regular churchgoer; the Piper windows alone justify the visit.