Both these buildings are inspired by tsuzumi, a Japanese traditional drum shaped like a hourglass, with the heads connected by strings. And the Kobe Port Tower even reproduces the red color of the traditional strings...
EXIF info:
Nikon D300
Lens: 8-16mm F/4.5-5.6G
Focal Length: 8mm
Aperture: F/7.1
Shutter Speed: 1/2000s
ISO Sensitivity: ISO 250