See things differently with a bundle of Illuminating encyclopaedias

These gorgeous books allow you to use a magic viewing lens to discover hidden secrets inside a kaleidoscope of colour...

There's so much more to the world than meets the eye... and with this beautiful bundle of three unique books, you can use the magic three-colour viewing lens included to see it as never before!

In Illumisaurus, you'll travel back millions of years to explore the Jurassic, Triassic and Cretaceous periods, uncovering the incredible landscapes, wildlife, and fearsome dinosaurs that roamed the Earth. Illuminature takes you on a journey through ten of the world's most diverse environments, switching from the night-time adventures of nocturnal animals with one lens colour and into the sunlight, and the creatures and plants that explore the world by day, with the others. Finally, Illuminatlas allows you to travel the world - spotting different countries, natural phenomena, and some real sight-seeing highlights with your viewing lens.

We've got a whole set of these three stunning books to give away! To be in with a chance of winning, simply answer the question below and leave your details by the closing date of 11pm on Tuesday 2 February 2021.

Win three Illuminating encyclopaedias

In which period of history did Tyrannosaurus Rex live?

Terms and conditions

1. Participants must be at least 18 years old to enter.

2. To enter the competition, you must be a resident of England, Scotland, Wales or Northern Ireland. 

3. The competition is not open to employees (or members of their immediate families) of BookTrust.

4. Only one entry per person.

5. Entries must be submitted by 11pm on Tuesday 2 February 2021.

6. There will be one winner selected at random (from all eligible entries).

7. If a chosen winner does not respond to correspondence within one week, a new winner will be selected.

8. Our decision will be final, and no correspondence will be entered into.

9. The prize will not be transferable to another person.

10. No part of the prize is exchangeable for cash or any other prize.

11. The prize is run by BookTrust of G8 Battersea Studios, 80 Silverthorne Road, Battersea, London SW8 3HE. However, the prize will be sent out by a third party and by entering you acknowledge that your details will be passed on to them, solely for the purposes of administering this competition.

12. Prizes will be sent out to winners by post. However, BookTrust cannot be held responsible for any prizes lost, damaged or stolen after they have been sent.

13. Where a third party is supplying a prize, BookTrust accepts no responsibility for inaccuracy of any prize description, and the third party is responsible for prize fulfilment.

14. By entering you are agreeing to the terms and conditions in our privacy statement.

15. BookTrust reserves the right to amend the competition end date at any time.

Thank you!

A big thank you to everyone who donated to the BookTrust Christmas appeal, with your generous support, we have sent surprise book gifts to 14,250 children who are vulnerable or in care in the run-up to Christmas. Your gift helped the children feel special during the festive period.

Help more children in 2021 with books and reading support by becoming a BookTrust Friend.