Seward, Minneapolis The quietest room on Earth

Orfield Laboratories Anechoic Chamber

The Guinness record holder for the quietest place on the planet, absorbing 99.99 percent of sound. Visitors in the chamber report hearing their own blood moving and joints clicking. The longest anyone has lasted alone in the dark inside it is around 45 minutes.

2709 E 25th St, Minneapolis www.orfieldlabs.com/visit $$$$
How to visit: By appointment only, weekdays. Roughly $200 per person for a 90-minute tour including a 20-minute chamber session. Email emma@orfieldlabs.com.

More curiosities

See the full curiosities list →