Like the Frank Lloyd Wright house in Oak Park there’s something a little underwhelming about them at first to a modern sensibility - they feel like spaces you are familiar with from modern houses (albeit often realized with greater skill than is typical - both houses make incredible use of their window perspectives for example). But then you need to recognize how far ahead of their time they were; Gropius’s aesthetic was his invention; that you can replicate it in your own home out of an ikea catalog today is because of him.