What are some interesting unused/abandoned/derelict infrastructure

Looking for some places to learn about, kinda a passion project of mine.

Some things I’ve read up on a visited or learned about already:

-i335 on ramp off 35w and the 70s block through ne
-the telephone line bridge over 94 at Fairview that looks like a ped bridge
-Selby street car tunnel
-Abandoned AmTrak station
-Meeker island lock and dam
-Ford plant ruins/lots around the river
-Franklin Ave bridge streetcar poles
-various popular abandoned buildings like the one near utepils and the u
-Orth brewing complex

Anything deeper than surface level things, maybe hidden in plain sight or things that have always been here that we just gloss over that have a unique history.
Thanks!

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u/ohcanada13 — 1 day ago