Later this November, PAM will link its original building with the Masonic Temple expansion by way of the Mark Rothko Pavilion. The new structure will extend across SW Madison and add approximately 10,000 square feet of space to Portland's flagship art museum, finally connecting the two buildings. The Rothko solves a major problem for PAM. Previously, the original part of the museum and the Mark Building were linked via an underground passageway that a lot of guests completely missed during their visits.