World's tallest and longest tunnel slide opens 
The world's longest and tallest tunnel slide, ArcelorMittal Orbit, which has 12 loops was opened to the public on Friday in London, UK. The 584-feet long and 250-feet tall slide has been designed by British-Indian artist Anish Kapoor and created by Belgian artist Carsten Holler. It has been transformed from UK's tallest artwork built for the London Olympics in 2012. 