Nishigaya Sports Center is located far away, about 30 minutes by bicycle from Shizuoka Station on the other side of the Abe River. That is probably why I never realised they might have, and an ancient one at that, their own particular manhole covers!

They are all, 21 of them, located in the middle of a street running along the sports center (none were found near the baseball stadium, though). There are two types,most often in pairs, although of the exactly same design.
They were probably installed in 1990 when the Sports Center was completed, making them very old by Shizuoka standards!

The “denki/電気/underground electric cables manhole cover”!

The “Tachi Aoi/たち葵/Hollyhock”, emblem flower of Shizuoka City!

A “Tsubame/燕/Swallow”, one of the two Shizuoka emblem birds (the other one is the kingfisher)!

The “Osui/汚水/spent waters” type!

I have a strong hunch they will soon be replaced so keep an eye on them!

RECOMMENDED RELATED WEBSITES

So Good Sushi Restaurant in Nice France
Navigating Nagoya by Paige, Shop with Intent by Debbie, BULA KANA in Fiji, Kraemer’s Culinary blog by Frank Kraemer in New York,Tokyo Food File by Robbie Swinnerton, Green Tea Club by Satoshi Nihonyanagi in Shizuoka!, Mind Some by Tina in Taiwan, Le Manger by Camille Oger (French), The Indian Tourist, Masala Herb by Helene Dsouza in Goa, India, Mummy I Can Cook! by Shu Han in London, Pie
rre.Cuisine, Francescannotwrite, My White Kitchen, Foodhoe, Chucks Eats, Things that Fizz & Stuff, Five Euro Food by Charles,Red Shallot Kitchen by Priscilla,With a Glass, Nami | Just One Cookbook, Peach Farm Studio, Clumsyfingers by Xethia, PepperBento, Hapabento, Kitchen Cow, Lunch In A Box, Susan at Arkonlite, Vegan Lunch Box; Tokyo Tom Baker, Daily Food Porn/Osaka, Only Nature Food Porn, Happy Little Bento, J-Mama’s Kitchen, Cook, Eat, Play, Repeat, Bento Lunch Blog (German), Adventures In Bento, Anna The Red’s Bento Factory, Ohayo Bento

Must-see tasting websites:

-Sake: Ichi For The Michi by Rebekah Wilson-Lye in Tokyo, Tokyo Through The Drinking Glass, Tokyo Foodcast, Urban Sake, Sake World
-Wine: Palate To Pen, Warren Bobrow, Cellar Tours, Ancient Fire Wines Blog
-Beer: Another Pint, Please!, Beering In Good Mind: All about Craft Beer in Kansai by Nevitt Reagan!
ABRACADABREW, Magical Craftbeer from Japan
-Whisky: Nonjatta: All about whisky in Japan by Stefan Van Eycken
-Japanese Pottery to enjoy your favourite drinks: Yellin Yakimono Gallery

Non gastronomy must-see sites by Shizuoka Residents

HIGHOCTANE/HAIOKU by Nick Itoh in Shizuoka City