You can build a climbing wall indoors, or outside with this tutorial.
Home Rock Climbing Wall - by Elevate Climbing Walls
I want this in my backyard...my playground
Home made climbing holds - great!
301 points and 55 comments so far on reddit
this is a site that gives tips for building youre own rock climbing wall. Yeah, this would be awesome! Future dream!
I really like the rock wall built into the hill!
Instructions on how to build an outdoor bouldering wall like this one.
Building Your Own Climbing Wall: Illustrated Instructions and Plans for Indoor and Outdoor Walls (How To Climb Series) by Steve Lage, http://www.amazon.com/dp/0762780231/ref=cm_sw_r_pi_dp_ywF4qb1YZGMZN