Sidewalk Lights – Vault Lights or as they
were commonly called, Sidewalk Lights, are glass prizms set into sidewalks to
let light into vaults and basements below. Prizms were used instead of flat glass to disperse the light. Flat glass
would cast a spot on the floor below whereas the prizm would spread the light
out over a larger area. The idea originated in the 1840’s as Deck Lights. They
were used on ships to let light below decks, especially when an open flame
would be hazardous. The idea caught on in cities in sidewalks to illuminate
below grade. Many businesses in Downtown
Minot had the Sidewalk Lights in the sidewalks in front of the store. The
basements of many businesses went under the sidewalk. This was because many had
freight elevators in the sidewalk. The heat from the basement below helped to
keep snow melted. By the 1930’s they were on their way out as electricity
became less expensive. Now they are endangered relics, or antiques. There are
probably still some in sidewalks in Minot ’s
downtown area.
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