'Heavenly River' installation by Julien Salaud

"A luminous, panoramic landscape of UV-coated thread enchants a subterranean cellar in Julien Salaud’s newest site-specific installation, Fleuve Céleste (The Heavenly River). 82 feet beneath the ground, in the cellars of the Maison Ackerman, the eccentric artist has spun a “magical bestiary” with approximately 28 miles of cotton thread and 65,000 nails."

from the creators project.

ReMIX outlines house renovation plans with UV installation

"Beijing architecture firm reMIX Studio has literally outlined its plans for the renovation of an ancient hutong residence by marking proposed structures with illuminated white strings

ReMIX is in the process of overhauling the interior of an old building in the Dashilar hutong, where a lot of regeneration work is being undertaken.

However, the architects knew early on the project would not be completed to show visitors to the area during the city's annual design week, so came up with an alternative presentation.

"We came up with a way to visualise our plans instead," reMIX cofounder Federico Ruberto told Dezeen."

more at Dezeen,

'Bounce below' in an abandoned slate mine in Wales

"Giant trampolines inside a mammoth slate quarry cavern are the latest tourist attraction tipped to bring thousands of thrill seeking tourists to the region.

Bounce Below will open next month at Llechwedd in Blaenau Ffestiniog – the world’s first facility of this kind. The caverns, twice the size of St Paul’s Cathedral, will be lit up in a light show while visitors bounce on giant trampolines linked by a 60ft long slide."

From here and here.