Eilean Donan Castle will switch off its lights as part of conservation group WWF’s Earth Hour.
Owners of buildings and individuals across the world have been asked to turn out lights for 60 minutes from 2030 GMT on 28 March.
The Forth Rail Bridge and Edinburgh Castle are also part of the switch off.
Christ the Redeemer statue in Rio de Janeiro, the Eiffel Tower and Sydney Opera House will also be blacked out.
The Falkirk Wheel is an amazing piece of engineering. Tours to the Falkirk Wheel can be booked online or by phone on 07305-294773 .
Watch this Falkirk Wheel video
Taxi Bookings on 07576-127097 ( 24 hours ) or freephone 0800-6190575.
five castles tour Scotland
Falkirk tours , visit the Falkirk Wheel
Scottish Highlands tour visit the amazing scenery of Scotland
Outlander tours of film locations in Scotland
Kelpies tours, visit the amazing 30 metre high Kelpies in Falkirk
Falkirk tours and transfers, visit the Kelpies and the Falkirk Wheel, two unique attractions connected by the Union Canal
Airport taxi transfers Falkirk offer a professional airport transfer service from Falkirk to Edinburgh Airport
Private tours Edinburgh offer a wide range of tours of Scotland’s castles , film locations and landscapes , visit Outlander , Monty Python and Outlander film locations
Lallybroch castle is the ancestral home of Outlander star Jamie Fraser , real life Midhope Castle is just 25 minutes from Edinburgh on our unique Outlander tours .
Doune Castle tours , Doune featured in Monty Python , the Outlaw King , Game of Thrones and Outlander
Glentana Coaches – airport transfers from Edinburgh to Glasgow Airport
Outlander tours , tour the real film locations used in Outlander, including Lallybroch and Castle Leoch