"We’ve collected some of the best photos from the ‘Infrastructure’ subreddit . . ..
Some of the items in the linked BP post involve railroads or rails. Your enjoyment level may vary.
Here's one -- #63 The Tokyo Subway Network From Above
"According to anthropologist Margaret Mead, the first sign of civilization in a culture isn't something that we make (like fishhooks or clay pots); it's how we act towards others. Specifically, our compassion.
-- Part of the intro text at [www.boredpanda.com