The first one is what looks like a partially built French Chateau near Bentonville AR. I first saw it two years ago when it was just empty, now it is obviously abandoned. There are stone bridges and would guess at least a 15000 square foot stone house now abandoned. Wow, probably quite a story here.
Second is a obviously very expensive community that was going up west of Branson MO. Several very large house undoubtedly built on spec, chain across the entrance, no sign of construction, no tracks, probably in bankruptcy.