A closer look at the quirks, imperfections, and clever design solutions that have helped Frank Lloyd Wright’s Guggenheim Museum evolve over the decades.

100 Objects #21: Window from the House of D

Design is everywhere in our lives, perhaps most importantly in the places where we've just stopped noticing. 99% Invisible is a weekly exploration of the process and power of design and architecture. From award winning producer Roman Mars. Learn more at 99percentinvisible.org.