Industrial bridges bringing tourists to the Forth
24 January 2014 Last updated at 12:41 GMT
The Forth rail and road bridges have become increasingly valuable as tourist attractions.
The Scottish and UK governments have submitted a bid for Unesco world heritage site status for the rail bridge.
If successful, the Forth Rail Bridge would become Scotland's sixth world heritage site.
BBC Scotland's Morag Kinniburgh reports on plans to boost tourism for the bridges that span the Forth of Firth.