The Scottish islands of Staffa and St Kilda and Loch Lomond have been nominated for the coveted title of Britain's Finest Natural Wonder.
Loch Lomond is a finalist in Britain's Finest Natural Wonders
The trio will battle it out against six other nominees in The Radio Times and Five-run competition.
The public will be asked to vote for their favourite between 13 and 25 April
with the winner crowned on the Five TV programme later this summer.
Other nominees include the Giant's Causeway and the White Cliffs of Dover.
Staffa is an uninhabited island west of Mull and most famous for Fingal's Cave, formed entirely of enormous, hexagonally joined basalt columns
The archipelago of St Kilda is the remotest part of the British Isles and lies 41 miles west of Benbecula in Scotland's Outer Hebrides.
Loch Lomond is Britain's largest expanse of water at 18 miles long and up to four miles wide in places.
Besides natural wonders, Five's Britain's Finest series will celebrate four different categories during its run.
Other programmes will ask the public to vote for Britain's best national treasures, its actors and also actresses.
'Best of the best'
The show's executive producer, Bill Locke, said: "Britain's Finest is a fantastic opportunity to film the very best of the best.
"We've travelled the length and breadth of Britain from the Giant's Causeway to Cheddar Gorge and as far as windswept St Kilda to film our top 10 finest natural wonders."
A specialist jury made up of explorer Sir Ranulph Fiennes, Scottish Natural Heritage chief executive Ian Jardine and Radio Times editor Gill Hudson among others came up with the shortlist for the programme.
The full list of nominees includes: Cheddar Gorge; the Jurassic Coast; Lundy Island and the White Cliffs of Dover in southern England; Cwm Idwal and Dan-yr-Ogof Caves in Wales; the Giant's Causeway in Ireland and
Staffa, St Kilda and Loch Lomond in Scotland.
People can cast their votes by calling 09013 838 516 via text or by logging on to the Radio Times website at www.radiotimes.com/britainsfinest.