He followed something he called organic architecture which meant he believed in designing structures which were in harmony with humanity and the environment.
His design "Fallingwater" has been called "the best all-time work of American architecture".
He designed many of the interior elements of his buildings like furniture and stained glass.
An architect works by planning and designing buildings. People who would work for them would probably be a receptionists, an accountant, a boss, someone to run their errands, construction people and other people I can't think of off the top of my head.
