On the famous bridge Sanjo Ohashi from Kyoto there are 12 such ornaments, very valuable because of the craftsmanship and because of their age: these giboshi were made in 1590, during the time of Toyotomi Hideyoshi! And during all this time only one was lost, washed away by water during a flooding from 1935, but it was replaced with an identical one.
And they really look great, especially with a background of sakura cherry blossoms...
EXIF info:
Nikon D700
Lens: 24-70mm F/2.8G
Focal Length: 24mm
Aperture: F/4.5
Shutter Speed: 1/500s
ISO Sensitivity: ISO 1000