A hydraulic crane comprising: - a crane base; - a column, which is rotatably mounted to the crane base so as to be rotatable in relation to the crane base about an essentially vertical first axis of rotation; - a liftable and lowerable first crane boom, which is articulately connected to the column so as to be pivotable in relation to the column about an essentially horizontal second axis of rotation; - a first hydraulic cylinder for lifting and lowering the first crane boom in relation to the column, the first hydraulic cylinder having a lower end and an opposite upper end, wherein the first hydraulic cylinder at its lower end is articulately connected to the column; - a liftable and lowerable second crane boom, which is articulately connected to the first crane boom so as to be pivotable in relation to the first crane boom about an essentially horizontal third axis of rotation; - a second hydraulic cylinder for lifting and lowering the second crane boom in relation to the first crane boom, the second hydraulic cylinder having an inner end facing the column and an opposite outer end facing the second crane boom; - a first link, through which the upper end of the first hydraulic cylinder is connected to the first crane boom, wherein the first link is articulately connected to the upper end of the first hydraulic cylinder by a first joint and articulately connected to the first crane boom by a second joint; and - a second link, which forms a connection between the upper end of the first hydraulic cylinder and the column or between the first link and the column, characterized in that the inner end of the second hydraulic cylinder is connected to the first crane boom through the first link, wherein the first link is articulately connected to the inner end of the second hydraulic cylinder by a third joint, and wherein the first link is configured to mechanically guide the third joint in an arcuate path about the second joint when the first crane boom is pivoted in relation to the column about said second axis of rotation under the effect of the first hydraulic cylinder. - a crane base; - a column, which is rotatably mounted to the crane base so as to be rotatable in relation to the crane base about an essentially vertical first axis of rotation; - a liftable and lowerable first crane boom, which is articulately connected to the column so as to be pivotable in relation to the column about an essentially horizontal second axis of rotation; - a first hydraulic cylinder for lifting and lowering the first crane boom in relation to the column, the first hydraulic cylinder having a lower end and an opposite upper end, wherein the first hydraulic cylinder at its lower end is articulately connected to the column; - a liftable and lowerable second crane boom, which is articulately connected to the first crane boom so as to be pivotable in relation to the first crane boom about an essentially horizontal third axis of rotation; - a second hydraulic cylinder for lifting and lowering the second crane boom in relation to the first crane boom, the second hydraulic cylinder having an inner end facing the column and an opposite outer end facing the second crane boom; - a first link, through which the upper end of the first hydraulic cylinder is connected to the first crane boom, wherein the first link is articulately connected to the upper end of the first hydraulic cylinder by a first joint and articulately connected to the first crane boom by a second joint; and - a second link, which forms a connection between the upper end of the first hydraulic cylinder and the column or between the first link and the column,