Star of David on a Manhole

Japanese Manhole

 CC picture by "opencage" from Flickr

  Hexagram on a Manhole in Copenhagen

Picture is courtesy of "smoking_redmoon" who published it on Flickr. She wrote to me that she doesn't know what were the reasons to put a Star of David in such a place

 Hexagram on a Manhole in Cancale  France

CC Picture by Juanjo Marin from Flickr

Hexagram on a Manhole in Cancale  France

CC Picture by Aviruthia from Flickr

Hexagram on a Manhole in New York

CC Picture by i_follow from Flickr