The space behind the bust, which Kahn called the Room, is made of stone blocks, each 6 feet tall, 6 feet wide and 12 feet deep bracketing the room to east and west but leaving the view down the river open to the south.

WSJ: Louis Kahn | Four Freedoms Park | Louis Kahn's Four Decades to Freedom | By Julie V. Iovine

The deck provides an expansive view of the neighborhood, as well as three East River bridges and the rising 1 World Trade Center.

WSJ: A NoHo Penthouse With a Garden on Top