EKKO by Thilo Frank
Visitors to this installation in northern Denmark by German artist Thilo Frank are invited to walk through a contorted loop of timber while listening to the sounds of their voices and footsteps played back to them (+ slideshow).
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_1sq.jpg)
A circle of concrete paving creates a continuous walkway, while 200 wooden frames with incrementally different dimensions provide the twisted structure surrounding it.
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_3.jpg)
Microphones are hidden within the wooden beams and record the sounds made by everyone that steps inside.
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_4.jpg)
These sounds are continuously remixed by a computer and played back through tiny speakers to create a distorted echo.
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_2.jpg)
"The work acts as an archive of sounds and at the same time the visitors' perception of space and presence is amplified," explained Frank.
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_5.jpg)
Light enters the structure though the gaps between frames, creating stripes of light and shade on the interior surfaces.
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_6.jpg)
"Depending on the daylight the shadow play creates alternating patterns," said the artist. "From further distance the sculpture flickers in a moiré effect."
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_8.jpg)
Similar structures we've featured include a latticed timber hut on stilts and a wooden pavilion with a hollow belly.
![EKKO by Thilo Frank EKKO by Thilo Frank](https://static.dezeen.com/uploads/2012/10/dezeen_EKKO-by-Thilo-Frank_7.jpg)
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