This is an exact replica of an Ocean Monument from the new 1.8 snapshot. I've replicated it using Nether materials to give the building a new application.

The building will be pasted directly beneath you, as if you were standing on its highest point. There should be approximately 24 blocks of height wherever you paste.

WARNING!!! 
You must use "//paste -a" to place this build in your landscape without creating a massive hole.