Endoscope

An endoscope comprising:

• an insertion portion which includes a curving portion configured to curve in a first curving direction and in a second curving direction opposite to the first curving direction;
• an operation portion provided in a proximal direction side to the insertion portion, the operation portion including a curving operation portion which is configured to perform a curving operation of the curving portion by rotating around a pivot shaft in a first rotation direction and in a second rotation direction opposite to the first rotation direction from a neutral position where the curving portion is in a non-curved neutral state;
• a first operation wire which is pulled by the curving operation in the curving operation portion to curve the curving portion in the second curving direction;
• a second operation wire which is pulled by the curving operation in the curving operation portion to curve the curving portion in the first curving direction;
• a wire crossing portion which is provided within the operation portion and in which the second operation wire crosses the first operation wire;
• and
• a movement regulating portion which is provided within the operation portion and which is configured to regulate the movement of the wire crossing portion from within the operation portion into the insertion portion.