This year marks the 75th anniversary of the National Parks and Access to the Countryside Act 1949, which secured access for everyone to some of our wildest and most beautiful places. There are now 15 national parks across the UK, covering a staggering variety of landscapes, from the heather-clad uplands of the Cairngorms in Scotland to the chalky grasslands of the South Downs, England’s newest national park. We’d love to hear about your favourite beauty spots and outdoor activities, whether it be paddling the tranquil waterways of the Norfolk Broads or birdwatching on the craggy Pembrokeshire coast.

If you have a relevant photo, do send it in – but it’s your words that will be judged for the competition.

Keep your tip to about 100 words

The best tip of the week, chosen by Tom Hall of Lonely Planet, will win a £200 voucher to stay at a Coolstays property – the company has more than 3,000 worldwide. The best tips will appear in the Guardian Travel section and website.

We’re sorry, but for legal reasons you must be a UK resident to enter this competition.

The competition closes on 27 May at 9am BST

Have a look at our past winners and other tips

Read the terms and conditions here