I have two experiences:
Me and my dad drove to santa barbara for this player piano thing and to go to the beach, but on the way he took a different road that he used to take when he used to do survelance(irrelevant) but anyways we saw this house on the side of the road (it was hard to see because of all the bushes covering it) so we pulled over and checked it out. It was all trashed from previous people being there, and also it smelled HORRIBLE we looked around in there and stuff but couldnt find anything that cool, or where the smell was coming from. But it was pretty creepy.
Also, this is the best one, in my town, me and my friend Jared went through a bunch of little side streets full of business buildings(lumberyard, gardner service, glass company, junkyard, etc.) and we walked all the way until there was this big outdoor factory gated and barwired up that was abandoned with a tower, big pits full of small pebbles, sand, gravel, i mean big pits, one was empty and it was about 50ft deep. Theres also this building that was like a big metal shed and we went inside and theres all these old cans of some liquid thing, and theres these shelves along the wall, well we looked behind them and found an unoped beer can from 1982 that someone probably put there when the factory closed down. The best part of the factory is there is this like 3 ft by 3ft square manhole that was unlocked by the pits and i opened it up and therewas this dark hole that went straight down with a ladder and it must of been 75ft, and in daylight u couldnt see to the bottom. So anyways I get on the ladder first and wobble on it holding onto the ground to make sure it was sturdy. Jared stays up while I go about halfway down with my phone as a flashlight, He starts heading down till we get to the very bottom which is only like 5ft wide, theres a little whole in the wall that is lit up, we crawl through it barely and discover a long conveyer belt with rocks and water on it and a couple lights that were still lit up oddly. There was rusty shovels and a sledge hammer there, btw it was like a long hallway with a conveyer belt in the middle, we walk all the way to the end of the hallway and find a conveyer belt that leads up to the tower. Well, i guess thats about it.
Next week im gonna go there with my camera, just deciding to make a video or take pictures of it.