By appointment only. All Federal and some Japanese holidays, Thanksgiving, Christmas, New Year's
No admission fee
Added to JGarden:
The Japanese Embassy used to give private tours of its small garden and tea-house, as well as the Old Ambassador's Residence, but these are apparently no longer available. The tea-house is situated in a gravel-and-moss garden styled after the famous Kyoto garden, Ryoanji. It is surrounded by cherry trees, which also line the walk to the garden.
Looking at the residence of Yang Guei-fei
wish I had a man
who'd dig a pond for me