If it's Harajuku's youth culture you want to see, don't even bother unless it's the weekend and preferably a Sunday. The bridge across the train tracks from Harajuku station to Yoyogi Park is full of Gothic Lolita or GothLoli. The costumes are very outstanding and you can't miss them. It is funny to see the surprise of the western tourists heading to Yoyogi Park and Meiji Jingu who clearly had not read their guide books fully on Harajuku. You can hear their comments that make it very clear they just don't understand what is going on. Essentially the youth who have dressed up are just hanging out with friends, many of them come with the hope of being snapped by one of the many magazine photographers who mingle in the crowd. Failing that there are lots of western tourist happy to take their pictures.