There are surely many examples of these in Tokyo: houses or other buildings that were built along a river, stream, or canal. The waterways were subsequently filled-in, but the properties remain.

Here is an especially interesting example, in Edogawa  (Google maps).

First, a map. The building is indicated with a grey dot, at the confluence of two streams.

Edogawa house on former river confluence map

Here’s a picture of the house, facing north:

Edogawa house on former river narrow 1

Slightly closer:

Edogawa house on former river narrow 2

And a view from the house, facing south:

Edogawa house on former river park view

 

 

 

 

 

 

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