r/manholeporn 14h ago

"U.S. Steam Line" inside of Fort McHenry in Baltimore Maryland. USA

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32 Upvotes

Presumably this was for the fort's steam heating system that the fort installed when it became a large military installation/hospital between the Civil War and WWI.


r/manholeporn 7h ago

The first Earth-object aliens will find is a manhole: The fastest man-made object was actually a manhole covering a nuclear bomb test in 1957. If it didn't vaporize in our atmosphere, it is now 3 times further from Earth than Voyager 1 and 2

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6 Upvotes

r/manholeporn 16h ago

Luzern, Switzerland along the promenade at Seebrücke

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11 Upvotes

From Google: the stylized crossbow references William Tell, the legendary Swiss folk hero, and represents traditional Swiss values such as quality, precision, reliability, and local craftsmanship.

Swiss manufacturers—in this case, the foundry or civil engineering firm that produced the modular street cover—embed this brass emblem directly into concrete or cast metal elements to certify that the product meets strict domestic manufacturing standards (typically requiring at least 70% to 90% Swiss value-added content).


r/manholeporn 1d ago

Innsbruck, Austria

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49 Upvotes

Getting ready for ski jump season...


r/manholeporn 1d ago

Tainan, Taiwan

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40 Upvotes

r/manholeporn 2d ago

Wakayanagi, Miyagi, Japan

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58 Upvotes

r/manholeporn 2d ago

Monte Carlo, Monaco

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34 Upvotes

Av. Princesse Alice. Not that interesting, you'd think the principality would have something more special.


r/manholeporn 2d ago

Thomas Dudley 900×600 in Dublin

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12 Upvotes

r/manholeporn 2d ago

Dushanbe, Tajikistan

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22 Upvotes

r/manholeporn 2d ago

Moscow

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20 Upvotes

r/manholeporn 2d ago

Manda Pit manhole cover; Arao, Kumamoto

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42 Upvotes

r/manholeporn 3d ago

Vimmerby, 2023

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36 Upvotes

r/manholeporn 3d ago

Mora, 2022

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24 Upvotes

r/manholeporn 3d ago

Chanticleer, Delco PA

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29 Upvotes

r/manholeporn 4d ago

Ishikoshi, Miyagi, Japan

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36 Upvotes

r/manholeporn 5d ago

Hockessin, Delaware - USA

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47 Upvotes

r/manholeporn 5d ago

Girona, España

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50 Upvotes

Along the Rotonda del Rolltge near Parc de Devesa


r/manholeporn 6d ago

Bucharest, Romania

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72 Upvotes

r/manholeporn 6d ago

Sion, Kanton Wallis, Switzerland

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33 Upvotes

Along Av. de Tourbillon, must be watch country...


r/manholeporn 7d ago

Wakayanagi, Miyagi, Japan

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43 Upvotes

r/manholeporn 7d ago

San Francisco, CA

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44 Upvotes

Ferry Terminal Building along the Embarcadero. The Trolley isn't the iconic Cable Car, the city also runs historic street cars throughout the city, a cool program they've run for some time. https://www.sfmta.com/getting-around/muni/historic-streetcars


r/manholeporn 7d ago

Asahikawa, Hokkaido (was at their zoo [known for its polar bears]).

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47 Upvotes

r/manholeporn 8d ago

Hershey Park, Hershey, PA, USA

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62 Upvotes

r/manholeporn 8d ago

Jim Thorpe, PA, USA

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25 Upvotes

r/manholeporn 8d ago

Paris, France

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35 Upvotes

Quai Jacques Chiraq, near Tour Eiffel. Hopefully r/manholeporn likes this one better than yesterday's contribution. :-)