Curtain walls are used primarily in tall office buildings as well as in multifamily and institutional buildings. Yet they are also found in houses, primarily modern ones of at least two floors.
The first two photos show a modern house in Nashville from the outside and inside. Curtain walls typically span vertically, as is the case here, meaning there is some design freedom in the location of the horizontal and other mullions in between.
Most curtain walls have a regular grid of framing, allowing for a variety of infill pieces: clear glass, spandrel glass (solid, single-pane glass in front of insulation), metal panels, operable windows and even doors.
One of the main characteristics of curtain walls is transparency, which some people desire and others find to be create the feel of living in a fishbowl. Regardless of photos like these, just about all buildings with curtain walls have blinds, curtains or other shading elements to cut down on solar heat gain and maintain privacy.