The interior of the Süleymaniye Camii Mosque in Istanbul, Turkey, is almost 200 feet high and wide. Look up! The 173 foot dome is surrounded by semi-domes, arches and massive columns punctuated by 200 stained-glass windows that accent the brilliant coloring. The mosque was built by 3,500 workers and finished in 1558. A three-year restoration project was completed in 2010.