A seating furniture , comprising: a seat having a seat surface ; a pedestal comprising a pillar having a gas spring, wherein the gas spring is operable by a user by means of an operating lever ; and a tilt mechanism disposed between the pedestal and the seat and configured to allow tilting the seat surface of the seat relative to the horizontal, wherein the tilt mechanism comprises a lower bearing block mounted on the pedestal and an upper bearing block fixedly connected to the seat , wherein the lower bearing block comprises a convexly curved lower bearing surface on its upper side facing towards the upper bearing block, and the upper bearing block comprises a concavely curved upper bearing surface on its lower side facing towards the lower bearing block, the lower bearing surface of the lower bearing block and the upper bearing surface of the upper bearing block having substantially identical radii of curvature, and the upper bearing block being moveable relative to the lower bearing block along the upper bearing surface , and the tilt mechanism further comprises an intermediate element disposed between the lower bearing surface and the upper bearing surface , which intermediate element is set on the lower bearing surface and has a reduced sliding resistance at its upper side facing towards the upper bearing surface or is provided at the upper bearing surface and has a reduced sliding resistance at its lower side facing towards the lower bearing surface , for reducing a sliding resistance between the lower and upper bearing surfaces in a relative movement between the lower and upper bearing blocks , wherein the intermediate element comprises a stop for movement of the operating lever for the gas spring of the pillar . a seat having a seat surface ; a pedestal comprising a pillar having a gas spring, wherein the gas spring is operable by a user by means of an operating lever ; and a tilt mechanism disposed between the pedestal and the seat and configured to allow tilting the seat surface of the seat relative to the horizontal, wherein the tilt mechanism comprises a lower bearing block mounted on the pedestal and an upper bearing block fixedly connected to the seat , wherein the lower bearing block comprises a convexly curved lower bearing surface on its upper side facing towards the upper bearing block, and the upper bearing block comprises a concavely curved upper bearing surface on its lower side facing towards the lower bearing block, the lower bearing surface of the lower bearing block and the upper bearing surface of the upper bearing block having substantially identical radii of curvature, and the upper bearing block being moveable relative to the lower bearing block along the upper bearing surface , and the tilt mechanism further comprises an intermediate element disposed between the lower bearing surface and the upper bearing surface , which intermediate element is set on the lower bearing surface and has a reduced sliding resistance at its upper side facing towards the upper bearing surface or is provided at the upper bearing surface and has a reduced sliding resistance at its lower side facing towards the lower bearing surface , for reducing a sliding resistance between the lower and upper bearing surfaces in a relative movement between the lower and upper bearing blocks , wherein the intermediate element comprises a stop for movement of the operating lever for the gas spring of the pillar . <EOS>