Denbo-In 伝法院

Denbo-In 伝法院（でんぼういん）is a secret garden in Asakusa and it is usually not open to the public. By chance I happened to stroll by on March 24th, 2014, when it was possible to visit.
http://blog.hinomaple.com/2014/01/28/denboin-sensoji/
https://www.syougai.metro.tokyo.lg.jp/bunkazai/heritagemap/taito02/taito_c01.html