No. 109 is a rocket ship shaped spiral of hell that doubles for a mass of girly clothes and accessory shops replete with staggering kitsch and the incessant shriek of teenagers replete with barking megaphones. My friend's girlfriend loves the place but after 5 minutes I ran out screaming into the slightly less insane mass at Shibuya. Truly surreal and very scary.
Come out of Shibuya Hachiko plaza exit, go forward and bare left at the crossing and you'll see the spaceship on the left. Be careful.