![XS House Philadelphia by ISA Interface Studio Architects, [exterior black fiber cement facade / mezzanine interior / narrow site plan / street-level unit entry / bi-level duplex stair / facade projection bay detail / Vine Street Expressway context / building section diagram], 2019](https://architectureassociate.com/wp-content/uploads/2026/07/xs-house-philadelphia-isa-narrow-lot-apartments-01.jpg)
XS House Philadelphia: How ISA Turned an 11-Foot Urban Scar into 7 Brilliant Apartments
XS House is one of the most inventive and instructive small-scale urban housing projects completed in the United States in the past decade. Built in 2019 in Philadelphia’s Chinatown neighborhood and designed by local firm ISA (Interface Studio Architects), XS House placed seven apartments on...
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![Bechtler Museum of Modern Art by Mario Botta, [exterior terra cotta facade / swelling column plaza / cantilevered fourth floor / glass atrium interior / Sol LeWitt Wall Drawing foyer / Firebird sculpture plaza / gallery floor plan / section drawing], Charlotte North Carolina 2009](https://architectureassociate.com/wp-content/uploads/2026/07/bechtler-museum-of-modern-art-mario-botta-charlotte-01-600x400.jpg)