Oh man, I would die to get into an abandoned amusement park. Talk about endless subjects! Aren't any around here, though.

I like this shot. It's quite complex...a lot of lines all over the place but they do not overwhelm the roller coaster tracks.

And like polydactyle said, it's fun to watch nature reclaim the Earth.

Whoa...incredible display of nature taking over the coaster. Really like the deep tones and textures.

Wow. That is wonderful. It is like the end of the mankind.

Excellent find. I like the juxtaposition between the endurance of human structures, long after they've ceased to be useful, and the quiet determination of nature to assert itself.