Fire destroyed a river camp at Mississippi Mile River Camp near Palmyra, Missouri.
The call came shortly before 5:30 p.m. on Friday.
No one was hurt, but a piece of history was lost.
Palmyra Firefighter John Lewis says the river camp was made from a historic caboose built in the early 1900s by the Chicago Burlington of Quincy Railroad in Aurora, Illinois.
It was retired in the mid 1970s and was moved next to the Mississippi River around 1980.
"It absolutely kills me because I'm a big railroad buff, and I've always wanted a caboose in my back yard. To see this piece of history go, it's really sad," Lewis said.
Lewis says the river camp's owners were burning brush, getting ready for the summer camping season, when the fire spread to the camp.