More black and white
More geological phenomenon
Protip: Use RES to remove all those posts about manhole covers. The mods don't like it when you report them as spam.
My girlfriend and I went to Shakujin-Koen last week and on our way back to Tokyo we sat in the front car on the Seibu-Ikebukuro Line. Seeing this view brought back nostalgia of my daily commute into Tokyo when I studied abroad