Wars are hated for destroying human lives, but the monuments that arise from them are often gems. It is strange and paradoxical to think what is capable of building the human being can be, in turn what can destroy it. This is the case of an architectural structure located in Berlin. It is a Lutheran church called Kaiser Wilhelm Memorial. It was built in memory of Emperor William. You can find it in the very near Breitscheidplatz Tiergarten. Go inside to contemplate the blue light in its purest form, because the walls are covered by more than 20,000 blue crystals. I was really surprised.