Dreaming of hiding in a glass building can symbolize feelings of vulnerability and exposure. Glass often represents transparency, so you may feel like your emotions or thoughts are laid bare to others. The act of hiding suggests that you might be trying to protect yourself from perceived threats or challenges in your waking life.

The "crazy man" could represent a fear or an anxiety that feels uncontrollable or unpredictable. This figure may embody a situation or a person in your life that you find threatening or overwhelming.

Praying in the dream indicates a desire for safety, guidance, or support. It reflects a longing for reassurance and a hope for protection from whatever is causing you distress.

Overall, this dream may highlight your current feelings of insecurity and the need for a safe space. Consider reflecting on any real-life situations that are causing you anxiety and think about ways you can address them or seek support.