Anish Kapoor appears to turn the world upside down with a new show at Kensington Gardens.

The influential British artist’s giant curved mirror sculptures now have an outdoor setting in the Royal Park.

Four Kapoor sculptures, which create illusory distortions of their surroundings, have taken up residence among the trees, lakes and ponds for six months.

The valuable works of art, which will reflect the changing colours, foliage and weather of the park, are being given 24-hour security with guards having to brave the elements to keep an eye on the pieces around the clock.

Sky Mirror, which measures 10 metres in diameter, has been placed on the side of a lake where a Henry Moore sculpture once sat.

Sky Mirror (Red) can be seen above The Round Pond with Kensington Palace as its backdrop and is the first time Mr Kapoor has put one of his works in water.

Non-Object (Spire) is almost hidden under the trees while the viewer sees a distorted reflection of themselves in C-Curve.

Exhibition manager Stephanie Dieckvoss said: “Anish Kapoor comes to the park a lot and spent many weekends thinking about where to place them.

She added: “The reflection will change every day with the seasons, the weather, the viewer and with the light... the viewer is needed to make the work complete.”

Asked if he had any words of comfort for the security guards who will be guarding the works at night, Mr Kapoor said: “Oh God, I hope they don’t get too cold.”

Anish Kapoor: Turning The World Upside Down has been organised as part of The Serpentine Gallery’s 40th anniversary celebrations.

The exhibition is free and runs from September 28 to March 13 at Kensington Gardens.