### Anaechoic Chamber at Orfield Labs
When it comes to soundproof chambers, the quietest place on earth is the [Anechoic chamber][1], at [Orfield Labs][2]. Quoting from [this article from the Atlas OBscura][3]:

> A typical quiet bedroom at night measures about 30 decibels; this chamber measures at -9 decibels. It is made of 3.3-foot-thick fiberglass acoustic wedges, double walls of insulated steel and foot-thick concrete.

The chamber is in fact in the Guinnes book of records for being 99.99% sound absorbent. 

Yes, staying in the room for more than an hour *will* drive you crazy. One reporter did manage to resist for something along the lines of 45 minutes. By far [the best description I could find of the place is given by Mr. Orfield himself][4]:

> When it’s quiet, ears will adapt. The quieter the room, the more things you hear. You’ll hear your heart beating, sometimes you can hear your lungs, hear your stomach gurgling loudly. In the anechoic chamber, you become the sound.

Below is an image of the lab, and its record-winning certificate (courtesy of [Daily Mail Online][5]):

![Orfield Lab][6]

### Visiting the Chamber
The chamber is used by companies to for product development and tests. [Harley-Davidson is one such company.][8] Whether the chamber is open to the public is something that is not specified on the company website. I would imagine they don't organise tours per se, but you might be available to arrange something by contacting the company at 

    [email protected]


  [1]: http://en.wikipedia.org/wiki/Anechoic_chamber
  [2]: http://www.orfieldlabs.com/researchtour4.html
  [3]: http://www.atlasobscura.com/places/worlds-quietest-place
  [4]: http://www.hearingaidknow.com/2013/12/quietest-room-anechoic-chamber/
  [5]: http://www.dailymail.co.uk/sciencetech/article-2124581/The-worlds-quietest-place-chamber-Orfield-Laboratories.html
  [6]: https://i.sstatic.net/JbDQ0l.jpg
  [7]: https://i.sstatic.net/44tLmm.jpg
  [8]: http://www.orfieldlabs.com/projectperceptual.html