Watching these guys work is better than having a fishbowl at my desk
The original structure of the Provo Tabernacle burned down in 2010. The LDS church is now restoring the building and creating a two story basement below it. In order to do this, the entire structure had to be secured and piles were driven 40 feet into the ground below. After the piles were in place, the ground below was excavated thus the structure appears to "float"
More here about the Provo Tabernacle: en.wikipedia.org/wiki/Provo_Tabernacle
Video here about the restoration: youtu.be/rCR4q1Oqk3A
Also, pictures of the fire in 2010 here: www.flickr.com/photos/samsushiro/sets/72157625656701712/d...
And video here: youtu.be/kXFFp8o0KCk