The Shire Horse Centre in Yealmpton welcomed 300,000 visitors a year during its heyday in the 1980s.
Fire crews say the horse is "amazingly back on her feet and walking" after being rescued.
Chad and Alena first started writing to each other aged 17 and decades on they are still together.
A female driver was taken to Derriford Hospital following the collision near Yealmpton.
The Environment Agency says it is looking into what has caused the River Yealm to change colour.
The council in Devon says the consultation will help create a new homelessness strategy.
