Walking through a city, you'll see lots of buildings and statues - but to discover the hidden world below the streets, you'll need your 'magic' torch and your sense of adventure! Explore the cellar beneath the house, the pipes below the pavements, and the car parks and underground trains that run under our feet. Maybe you'll even uncover the fascinating remains of an ancient city, if you're lucky. This title is part of the My First Discovery paperback series - a unique collection of beautifully illustrated information books for children aged 4 to 7, with simple language to aid learning and realistic artwork to inspire young minds. This edition contains a paper torch at the back of the book, revealing hidden secrets on the 4 darkened transparent pages and making the story come alive - one detail at a time. With free access to a brand new audio app, children can listen and read along at their own pace, page by page.

Whales, the biggest animal on Earth, lives on the sea. It is a wonderful creature but becoming sadly rare. Watch this giant leap gracefully out of the waves. See how it looks after its calf underwater. Children will delight in comparing and identifying different whales.

Rare attacks by great white sharks have given sharks a bad name. Although some sharks have terrifying teeth, others only eat krill, plankton, and very small fish. Discover how they find their food. Learn how the biggest fish in the sea give birth to their young.

Buried underground, hidden in overgrown jungles and forests and deep under the sea, lost treasure lies waiting to be discovered. You can find out what life was like long ago.

Learn about the life in castles. Find out how difficult it is to get past its strong walls. Discover what it is like to be under attack.

This encyclopedia of dinosaurs has been created especially to allow young children to discover the lush natural world in which different species of dinosaurs evolved. The beautiful illustrations provide a detailed guide for readers to observe and identify the many different kinds of dinosaurs and giant sea and flying reptiles. The archeology of fossil finds and of painstaking reconstruction of skeletons is vividly portrayed.

Explore the hidden world that exists below the city streets. Find out why people are always digging up our streets. Discover how your waste water is taken away in a man-made underground river. Explore the tunnels that carry cars, lorries and trains under the sea.