Architecture is one of humanity's most visible and long-lasting forms of expression, spanning the entire length of humanity. Most historic civilizations are even identified by their surviving architectural relics: the Pyramids of Giza in Egypt, the Golden Pavilion in Japan, or the Taj Mahal in India. Here, our list focuses on a few of the icons of modern architecture (the last 150 years), the true masters of their craft. If you ever wanted a crash course in the icons of modern architecture here it is.​