Checkout The World Tallest and Longest Tunnel Slide Currently Opened

The world longest and tallest Tunnel Slide has been built and available, it is located at London's ArcelloMittal Orbit Tower which will be open for public use for the first time since completing the building.

Artist Carsten Höller has designed the 178 m-long (584 ft) helter skelter slide. It's the latest intervention to the 115 meter-tall (377 ft) Orbit, conceived by Anish Kapoor for the 2012 Olympics, following an abseiling attraction completed last year.

Holler in his words said "Since 1999, I have built a number of slides, both free-standing and attached to buildings, but never onto another artwork as in this case," who installed a pair of spiraling slides at the Hayward Gallery for an exhibition last summer.