Looking at webpages from years ago?

[FallingSnow]

What's the thing called ( how do I get to it) where you can see a webpage from years ago?
For example, if I wanted to look at Redigit's SMBX forums from 2011, how would I get to it.

I thought it was Google Cache or something, but I can't figure out how to get there.

[Marina]

http://archive.org/web/

[Shadow Yoshi]

On the subject of viewing old websites, OoCities is really cool.

[FallingSnow]

http://archive.org/web/

Yeah, that's what I was looking for, the Way-Back Machine. Thanks!

[HeroOfRhyme]

I actually used the way back machine last night. Back to the time last year when I was a level judge to show someone who asked.