It looks like a wonderful, almost out of this world wavy water, but if you'd try to dip your toes in there, you'd be in for a surprise. What looks like liquid is in fact rock-solid green marble, a dreamy installation by the French designer Mathieu Lehanneur. It is entitled 'Petite Loire' and is the latest creation from designer's 'Liquid Marble' series, which debuted at the Milan Design Week in 2013.

The hand-polished, 7.5-metre-long, single-piece marble was created with 3D software to mimic the surface of the river. 'Petite Loire is a freeze-frame,' explained the artist. 'The river's perpetual movement caught in a frozen, fossilised moment. A few dozen meters above the river's natural level, it cuts cleanly through the garden's surface.' 

As part of this year's 'Festival des Jardins', or Garden Festival, the marble waves can be seen and felt at the Domaine de Chaumont-sur-Loire Centre D'Arts et de Nature, in the courtyard of Chateau Chaumont in France's Loire Valley. Visitors will be able to enjoy it until November 2, 2016.