From the Bowery Boys website:
"St. Mark's-in-the-Bowery is one of Manhattan's most interesting and mysterious links to early New York history. This East Village church was built in 1799 atop the location of the original chapel of Peter Stuyvesant, New Amsterdam's peg-legged director-general.
His descendants—with the help of Alexander Hamilton and the architect of City Hall—built this new chapel with the intention of serving the local farming community of Bowery Village. But in many ways, the more thrilling tales occur among the honeycomb of burial vaults underneath the church, the final resting place of vice presidents, mayors, and even Peter himself.
St. Mark's reflected the changes that swept through Greenwich Village during the 20th century, with experimental and sometimes scandalous church activities, from hypnotism, modern dance and even a trippy foray into psychedelic Christian rock.
ALSO: Find out why you can never EVER go down into the vault of the Peter Stuyvesant. And why is the church IN the Bowery, not ON the Bowery?"