The 13th International Architecture Exhibition at the Venice Biennale doesn’t officially open until Wednesday, but here is a sneak peek at the now-completed exhibition at the U.S. Pavilion, which opened for previews this morning. This year’s exhibition, "Spontaneous Interventions," was spearheaded by commissioner Cathy Lang Ho and co-curated by Guggenheim Museum assistant curator of architecture and urban studies David van der Leer and ARCHITECT’s editor-in-chief Ned Cramer, Assoc. AIA. The exhibition designers have transformed the permanent U.S. Pavilion, designed by Delano & Aldrich, into a hall of flags, with banners hanging from the ceiling that highlight each of the 124 projects highlighted in the show. The courtyard in front of the pavilion is the site of "Commonplace," an installation by Interboro Partners, that will host formal programming throughout the Biennale’s three-month run.