Thirteen's continuing series, The City Concealed, heads to Brooklyn to take a look inside Green-Wood Cemetery for their second installment. The video tour visits the tombs and catacombs, and includes a little history lesson as well. Established in 1838, the cemetery has plenty of living roaming the grounds for the art and architecture alone--but as historian Jeff Richman notes in the video, some "fear the spirits" and refuse to visit.

In 2003 the cemetery opened the catacombs for an Open House NY tour, for the first time in 165 years. Richman notes that they were a middle-class option for those wanting the luxury of above-ground interment, and the most prominent person in them is Ward McAllister. Next up for the series: a look inside the abandoned medical complex at the Brooklyn Navy Yard!