This is probably the most important location of the Tour. I think this location only appeared in the Onegai Twins Opening, but somehow everybody who saw the anime Onegai Twins can remember this crossing. Even me with my useless goldfish memory remember the scenes of this location in the anime after 5 years!

Best way to get to this location is walking from Uminokuchi station towards the H-shop, you can't miss the crossing. The only possible way to miss this location is when you jump in front of the train!
Although it's a small train (check picture), it will surely kill you.

Walking from Uminokuchi towards H-shop is about 4 minutes, so very near the station at the north of Kizaki Lake.

Here's a useful link for planning traintrips, just click on "English" to get to the English-layout.