To dream that you are looking for a classroom, suggests that you need to expand your knowledge and learning.

Corner

To dream that you are in a corner, signifies feelings of frustration and lack of control in making decisions. You may feel trapped and "cornered".   

Carnival

To dream that you are at the carnival, represents falsehoods and deception. If you observe freakish sights, then it denotes that there is a lack of harmony in your domestic life.  Much sorrow will arise in what were thought to be pleasant times.

To dream that you are on a carnival ride, suggests that you are going in circles. It may also symbolize cheap thrills.

To dream that you run away with the carnival, denotes that you will be involved in or closely connected to the entertainment field

Corridor

To dream that you are walking through a long corridor, signifies your desperation in trying to escape a repetitive situation or behavior patters. You need to free yourself of this repetition and the corridor is seen as a passage from one phase in your life to another

Hotel

To see a hotel in your dream, signifies a new state of mind or a shift in personal identity. You are undergoing some sort of transition and need to move away from your old habits and old way of thinking. You need to temporarily escape from your daily life. Alternatively, the dream may imply a loss in your personal identity. 

To dream that you are in a mine, signifies that you are getting to depth or core of an issue or condition. Alternatively, it suggests that something from your unconscious is coming to the surface. The dream may also be a metaphor to claim what is "mine"

School

To dream that you are in school, signifies feelings of inadequacy and childhood insecurities that have never been resolved. It may relate to anxieties about your performance and abilities. If you are still in school and dream about school, then it will naturally serve as a backdrop to your dream world.  

Alternatively, a dream that takes place in school may be a metaphor for the lessons that you are learning from your waking life. You may be going through a "spiritual learning" experience. 

To dream that you are looking for a school, suggests that you need to expand your knowledge and learning.

To dream that your childhood school is in ruins, suggests that you are dwelling on some unresolved childhood issue. Alternatively, the dream represents the passage of time. You need to look toward the future instead of reliving the past. 

Forest

To dream that you are in or walking through the forest, signifies a transitional phase. Follow  your instincts. Alternatively, it indicates that you want to escape to a simpler way of life. You are feeling weighed down by the demands of your life.

To dream that you are lost in a forest, signifies that you are searching through your unconscious for a better understanding of yourself.