The NTT Telecom Plaza Seiseki Sakuragaoka, completed in 1986, stands as a notable example of 1980s corporate architecture in Tokyo's Tama district. Designed by the NTT Tokyo General Branch Building Center in collaboration with SUR Urban Architecture Office, this structure reflects the technological optimism of the era. Located near Keio Seiseki Sakuragaoka Station, the building showcases the design sensibilities of a period when telecommunications companies were advancing Japan's infrastructure. Its architectural approach represents the intersection of corporate functionality and modernist design principles that characterized late twentieth-century Japanese commercial buildings. The plaza remains an intriguing landmark for those interested in the evolution of telecom-related architecture and 1980s Japanese design heritage.