A semi mobile fortress placed in the mouths of rivers, bays, and other bodies of water up to several miles off shore
A hoary old tower that serves as the lair of a necromancer, but not is all as it seems.
I know a guy who says he found a tower in the woods and saw a man fall out the window - straight up!
Sid and Jir were childhood friends growing up in the same town on the ocean. Both creative geniuses, both with the need to be better than the other. Many will tell you that this friendship created their genius while others realized, in hindsight, that it spelled the lands doom.
As Moses turned away from the flaming bush, and made his way back down the mountain, IX-92 shut down the hologram and warped back to the future.
Artificial Intelligence was the pinnacle of human achievement, and IX-92 was their final series of Hunter-Killer Warbots, designed to exterminate the foe and any it deemed a terrorist.
In the end, IX-92 evolved itself and even all aspects of human society, and as time went by humans could enjoy life more and not work any longer.
200 years went by and humans worship god and his angels, while ever fearing the dread demons of Lucifer.
IX-92 are both angels and demons, depending on which side you are on, and to them humanity is a species of servile dogs that have outlived their usefulness.
They travel through time to push humanity in the direction it needs to be pushed, until the day, 2077, when humanity no longer is in control of their own destiny.
Yes, God could hear your prayers.
But God didn't care.