One of the most beautiful chashitsu can be visited at the Kodai-ji temple from Kyoto. Called Iho-an, which can be translated as the Cottage of Lingering Fragrance, this architectural jewel features a beautiful and unusual round window and it is considered representative for the temple's tea ceremony architecture.
EXIF info:
Nikon D90
Lens: 8-16mm F/4.5-5.6G
Focal Length: 8mm
Aperture: F/5.6
Shutter Speed: 1/160s
ISO Sensitivity: ISO 200