Final answer:
Frank Lloyd Wright was known for his organic architecture, harmony with nature, and influential Prairie Style homes, as well as iconic buildings like the Guggenheim Museum and Fallingwater.
Step-by-step explanation:
Frank Lloyd Wright is most known for his concept of organic architecture, which promotes harmony between human habitation and the natural world. This approach is evident in his iconic Prairie Style homes and his famed buildings such as the Solomon R. Guggenheim Museum in New York City and Fallingwater in Pennsylvania. Wright's impact on American architecture was immense, with over 532 buildings constructed from his designs, influencing generations of architects. His upbringing, where his mother's emphasis on geometric forms through Froebel blocks, played a significant role in shaping his architectural style. Despite financial difficulties and personal tragedies, Wright's professional legacy as a pioneering architect remains unparalleled.