If you had to store something for 100 years, how would you do it? The Building by the Plum Orchard On the north side of downtown San Jose, tucked against a gentle curve in California State Route 87 and the Guadalupe River that it follows, sits a nondescript single-story off-white building with tinted windows. As of the time of writing this, signs exclaim that 99 Notre Dame Avenue is available for lease.