The history of interior design teaches us that furniture styles were not generally mixed together as a cohesive design. Take the Victorian era. In a Victorian room, Victorian furniture was used along with Victorian curtains, Victorian accessories, you get the idea. It’s not until relatively recently, I’d say even the last 15 years, that the “eclectic style”, the formal meaning of the word as not sticking to one designated style, has come to be common. Desireable even. That said, I think it’s pretty tricky to create a room with furniture of various styles and eras effectively. Oftentimes, it can come out looking like a hodge podge of garage sale finds. When it’s done right, it can be super beautiful. There are three ways to make it work.