 These two buildings, each with a single tenant that towers above the space between them, act as a grand gateway for those descending the three-tiered staircase into the Quad's northeastern end.The quad is lined with thirty Yoshino cherry trees, which draw sightseers when they blossom, typically between mid-March and early April.The cherry trees were bought by the UW in 1939 and initially planted at the Washington Park Arboretum.