Nearest station
Subway: Aoyama 1-chome (or, Aoyama-Icchome) Station
(Ginza Line, Hanzomon Line, and Oedo Line)

Directions
From Aoyama 1-chome Station
Ten-minute walk from Exit 4
--- The map from Aoyama 1-chome Station: Map-Directions to the Sogetsu Kaikan (PDF)

From Shinagawa Station
There are several ways to get to the Sogetsu Kaikan from Shinagawa Station. One is to:
Take the JR Yamanote Line to Shibuya Station. Change to the subway, Ginza Line at Shibuya Station, and get off at Aoyama 1-chome Station.

From Shibuya Station
Take one of the subways, Ginza Line or the Hanzomon Line, to Aoyama 1-chome Station.

From Shinjuku Station
Take the subway, Toei Oedo Line to Aoyama 1-chome Station.