Since the early 1600s, the Blue Mosque has been quite the sight to behold, with an array of domes, semidomes and minarets (or narrow towers). It's also one of the biggest tourist draws in Istanbul.

Often in many mosques, the dome acts as the a central element of the structure, with its large shape and ornate design to draw the eye of the viewer in. However, the Blue Mosque's the smaller dome ...