Symmetry is everywhere, in architecture as well as in nature it is simply gorgeous in my humble opinion.
Symmetry (from Greek συμμετρία symmetria “agreement in dimensions, due proportion, arrangement”) in everyday language refers to a sense of harmonious and beautiful proportion and balance.[a] In mathematics, “symmetry” has a more precise definition, that an object is invariant to any of various transformations; including reflection, rotation or scaling. Although these two meanings of “symmetry” can sometimes be told apart, they are related, so they are here discussed together…. information sourced from Wikipedia.org