MIA is about five minutes from the station. If you take exit 0, you will be on Gaien-Higashi-dori Street. Walk to the left on Gaien-Higashi-dori. After about two minutes, you will see the crosswalk near the main gate of Aoyama Junior High School. Cross the street, turn left immediately, and then follow the signs.
Five-minute walk from the Aoyama-Itchome Station Exit 0 (on the Ginza Subway Line, Hanzomon Subway Line, and Toei Oedo Line)