Availability: Now, $1,828 per cu. ft.
To Learn More: litracon.com
Mixing glass with cement may seem strange, but that is what Aron Losonczi, a Hungarian architect, has done to create a transparent concrete called LiTraCon. Glass in the form of fiber optics allows light to filter through the material, creating a surreal effect. Available in sheets 2 in. or more wide, LiTraCon is as strong as regular concrete and can be used for walls, flooring or sculpture. It is on display at the National Building Museum in Washington through Jan. 23.