You already know I have a thing for
WebUrbanist, and from them I found
Opacity which concentrates on "ruins" - love it! they recently posted the video on Michigan Central Station, and a couple of days ago this post on
Abandoned churches
These churches and chapels can range from a small single room to vast spaces with multiple levels, and sometimes encompass a school, convent, or rectory. Many can be found at psychiatric hospitals, which often catered to all different faiths. Most of these structures hold extravagant details in their woodwork, stone, or massive pipe organs, and the abandonment of this craftsmanship is often astounding.
Check out the photos on the site, especially the one in Detroit with the cupola and mezzanine floor.
This is from the chapel of the Chateau de Mesen, an abandoned castle in Lede, in Flanders, in Belgium.