Imagine an exhibition where not only the whole world is featured in astonishing photographs taken from a helicopter, but each picture is the size of a double bed, and it's free.

Well, that is exactly what Earth From The Air is all about — a spectacular exhibition of 120 pictures of astonishing natural landscapes across the globe by the renowned French photographer Yann Arthus-Bertrand.

Each enormous photograph tells a story about our world, showing its awe-inspiring beauty and illustrating how our planet is changing.

In views ranging from spectacular panoramas of vast geographical formations to intimate glimpses of small scale features, Arthus-Bertrand's photographs give a remarkable account of the world's surface.

His searching lens portrays human settlements, from cities to desert oases, to varied and exceptional vistas in the world in extraordinary compositions of light, colour and form.

This awe inspiring exhibition has wowed millions of visitors all over the planet.

It opens at the Oxford Castle on Tuesday as part of the Planet Earth Season.

And it's free and can be viewed at any time of day or night without prior booking and is suitable for everyone — definitely a must-see show. Organisers expect visitor numbers will be in the region of 250,000. Supporting the exhibition is a giant walk-on world map, facts and figures that encourage everyone to make small lifestyle changes to help make a positive difference to our planet, a free film narrated by the photographer, environmental workshops, local photographic displays, a Big Draw Birds Eye View workshop, a creative writing workshop and a dedicated information centre and shop.

For more information go to www.earthfromtheair.com