Inside the ceilings are supported by groin vaulted stone arches rather than timber framing.
Floors and stairs are laid in "marble flag."
The first floor has a library and lounge for attorneys, and the John Jay room, for public events and overflow viewing of oral arguments via closed-circuit television.
It and other public areas of the first floor have teak paneling and molding.

All seven judges' chambers are on the second floor, along with their library and the conference room where they meet to cast votes on cases after hearing arguments.
They are finished in wooden paneling.
An Art Deco chandelier of modern construction lights the conference room.
The third floor has some additional library space along with the offices of court and individual judges' clerks.

Under the dome, the rotunda's decorative work uses all three classical orders.
Plain Doric columns and capitals on the first floor are topped by carved Ionic columns on the second story.
They support ornate Corinthian columns at the top.
In the ceiling is The Romance of the Skies, a 1,000-square-foot (93 m²) painting depicting the three seasons when the court is in session.

In the rear wing is the courtroom, its interior decorated in ornately hand-carved brown oak, similar to its furniture.
Oil portraits of past Court of Appeals judges line the walls up to the 22-foot (6.7 m) carved plaster ceiling.
A fireplace of bronze, marble and Mexican onyx is in one wall.
It is floored with a red carpet decorated with geometric patterns.
Inside the ceilings are supported by groin vaulted stone arches rather than timber framing. Floors and stairs are laid in "marble flag." The first floor has a library and lounge for attorneys, and the John Jay room, for public events and overflow viewing of oral arguments via closed-circuit television. It and other public areas of the first floor have teak paneling and molding.
All seven judges' chambers are on the second floor, along with their library and the conference room where they meet to cast votes on cases after hearing arguments. They are finished in wooden paneling. An Art Deco chandelier of modern construction lights the conference room. The third floor has some additional library space along with the offices of court and individual judges' clerks.
Under the dome, the rotunda's decorative work uses all three classical orders. Plain Doric columns and capitals on the first floor are topped by carved Ionic columns on the second story. They support ornate Corinthian columns at the top. In the ceiling is The Romance of the Skies, a 1,000-square-foot (93 m²) painting depicting the three seasons when the court is in session.
In the rear wing is the courtroom, its interior decorated in ornately hand-carved brown oak, similar to its furniture. Oil portraits of past Court of Appeals judges line the walls up to the 22-foot (6.7 m) carved plaster ceiling. A fireplace of bronze, marble and Mexican onyx is in one wall. It is floored with a red carpet decorated with geometric patterns.
New York Court of Appeals Building