Firefighters in Plymouth had to rescue two teenagers from a church steeple after they climbed up it in freezing weather conditions.
Charles Church is a permanent memorial to the 1941 Blitz
The 19-year-olds managed to climb 70ft (21m) up the ruin of Charles Church and were rescued by fire crews at 0300 GMT.
Devon and Cornwall Police said: "They put a lot of other peoples lives at risk by doing this."
The pair were taken into police custody and each fined £80. Temperatures reached about -3C (26.6F) overnight.
The teenagers, from the Mutley area, were each given £80 fixed penalty notices for being drunk and disorderly.
A police spokeswoman said: "It is not the sort of thing anybody should do if they are drunk."
The church was destroyed during the Blitz in 1941. It is now an official permanent monument to the bombing of Plymouth during World War II.