Run away it's Leona Helmsley's mausoleum!!! When he died in 1997 Harry Helmsley was entombed in Woodlawn Cemetery in the Bronx. In 2004 a community mausoleum was opened near Harry's place of rest. Spending eternity near common people was not acceptable to the Queen of Mean so she went and found a more suitable plot in Sleepy Hollow Cemetery. The site is in a nook at a distance from other graves. A volunteer for the cemetery, not the talkative Old Dutch Church guy, told me that she demanded that, contrary to cemetery convention, the 1.4 million dollar Helmsley mausoleum face away from the other burial plots.
The mausoleum does have a nice stained glass window of New York's skyline. The Helmsley's once owned the Empire State Building so I'd guess other buildings of theirs are also featured in the window.
I hope this did not frighten anyone too much!