A pair of stacked accessory dwelling units, or ADUs, features arched structures. These units are part of a design that has been showcased.

Further details about this design are available from the source, Dezeen. The source provides information about the arched structures that form the pair of stacked ADUs.

The design is associated with a location, but for more specific information, readers can refer to the original source, which offers a more detailed look at the stacked ADUs with arched structures.