The story goes like this, the CEO of a now long gone company wanted to make a mansion as large as Bill Gate's home (50,000 square feet). Ground was broke on this project... over 20 years ago. This makes a lot of people believe that it's abandoned, but it is actually still undergoing construction. Annual progress reports (submitted every 6 months) show things such as "We've added a little more roofing to the roof." So they haven't stopped construction, they've just barely done enough to keep the project going. The CEO has also been a nasty neighbor, building a rock wall and back fill in the nearby river without permits and the sorts. I was able to get through most of the mansion until heading towards the very last room we heard some very close footsteps, presumably from the onsite security and decided to high tail it out.
This was the best clear shot I could get without risking being spotted in the open by the worker living on-site
This was some of the car showcase room, the one picture I snagged of the full thing is super blurry
This was a large portion of the basement, with the elevator shaft slightly visible on the right
This was the rest of the basement, mostly just junk at this point
This is the backside of the mansion
This is the main living room and entrance
This was one of the two giant window (fixtures?) looking out into the front yard from the living room
These are two pictures of the basketball court (My phone lense wasn't wide enough to get it in one)
This was presumably where the indoor pool was going to be
This is the walkway on the top floor, I wasn't able to cross it because at that point the on site worker was walking around and we had to get out
I have so many more pictures, but I figured me going through 9 bedrooms and a bunch of bathrooms that aren't distinguishable wouldn't be all that interesting. I plan on going back to check out the rest of the top level, but that probably wont be for a while.
Edit: Switched picture hosting service