I've had two dreams over the past few days that have had a shared theme. The beginning and end of the dream is unrelated, but basically, this happens:

Dream 1: I kick a brick on an old brick wall (castle?) and the wall opens up. I hurry inside jumping on these giant square stairs (really high stairs). I'm inside the "castle" or whatever it is, hurrying around jumping on these stairs. They are lighting up like a video game, in other words, I have to hurry. I'm jumping in all directions going really fast, taking random turns and not sure where I'm going. Soon I'm walking on a narrow brick wall and getting higher and higher in the castle.

Dream 2: I was at a party/movie theater (weird combo) and I go around to the back of the room, outside. There is a doorway that I go through and then I'm in a situation similar to dream 1. There are dangerous paths with the similar stairs as above. I hurry up the stairs (they don't light up this time) and I'm running around corridors in a dash. Here's the part that freaked me out: I run around a corner and, from a corner, this giant tall monster pops out screaming and begins chasing me. I run up the stairs as fast as I can, but the monster is gaining. As I hurry up the building, taking random turns, my perspective becomes 3rd person, and the monster is now a giant, as tall as a tree. I continue running up the building and the walls on the outside are destroyed (from the monster). The monster is getting close and I have no choice; I jump off. That's all I remember.

For tl;dr:

I'm in a normal situation, then I go through a hidden passage into a room with a complex stairway where I'm in a rush or being chased.