Manhole covers on Los Angeles streets are always being lifted open in films, usually for nefarious reasons. Sliding open a cover to drop the loot was just a plot twist in the first episode of "Heist." Anyway, the anony-blogger L.A. City Nerd, who seems to know his stuff on the innards of the city octopus, offers a photo feature on the various covers in use. This specimen is in front of Grand Central Market downtown. He's also got photos of covers made in Mexico and India, and of a hefty wooden baby used when steel and iron were in short supply during World War II.

Photo: L.A. City Nerd