I think you imagine heaven to be a giant abandoned building with l o n g eerily lit hallways and peeling paint everwhere.
Thank you for sharing another one with us. I like #4 the best.
How do I find these places? I watch, it's a matter of training your eye to notice tell-tale signs of closure/abandonment. I look at newspapers, and other sources. I'm also a member of a large community, so we share stuff like this.
Getting in? Easy, walk through an open door, crawl through a hole, broken window ect. I've actually climbed down into a pit to get access to a building. Up a tree, ect. Never do I force an entrance. That's Breaking and Entering, I just enter.