Of course, whenever I had the chance I visited their observatories, but I also love to admire them from below, for their architecture. Here's one of my favorites, the Chiba Port Tower, a 125 meters high needle built in 1986 to celebrate the population of Chiba Prefecture exceeding 5 million people. With a very narrow rhomboid section, just 15 meters per side, and covered by glass, I love how the tower reflects everything around it...
EXIF info:
Nikon D300
Lens: 8-16mm F/4.5-5.6G
Focal Length: 8.5mm
Aperture: F/4.5
Shutter Speed: 1/2000s
ISO Sensitivity: ISO 200