The image above is a curious architectural feature.
At first, from a distance, I thought it was the steeples on an Orthodox church.
Then, upon closer inspection, I speculated chimneys, incinerator, hot metal forge exhaust etc.
Going from a historic map to the street location of probably New Market and Callowhill, the rest of the images and documentation unfolded.
Malt Kiln House labeled A,A,A in shaded boxes above was a place to dry hops preceding the brewing process.
Malt Kiln also known as an Oast House in tradtional brewing. http://en.wikipedia.org/wiki/Oast_house
Testamony to Senate 1894: