The Boryeong Undersea Tunnel Promotion Center is located on the right side of the road just before the entrance rotary toward Daecheon Port in Boryeong Undersea Tunnel and is a tourist resting place where you can tour video rooms, exhibition halls, lounges, and specialty agricultural stores. It is 6,927m long and exhibits photographs and models of the construction method and process of the Boryeong Undersea Tunnel, which began construction in December 2010 and was completed and opened in December 2021. With the development of civil engineering and construction technology, the living area of the island area is also expanding, and the Boryeong Undersea Tunnel connects the west coast area through Wonsan Island and Daecheon Port, becoming an important bridge for tourism on the west coast. Visitors can enjoy leisure experiences such as skybikes and zip tracks along with sightseeing at Daecheon Beach and Daecheon Port nearby.

Information on Opening and Closing
- Summer season (March to October): 09:00 to 18:00
- Winter (November to February): 09:00 to 17:00
- Closed days: Every Monday, January 1, Lunar New Year, and Chuseok.

Admission Fees
- Admission is free.

Address and Contact Phone Information
- Address: 250-20 Daecheon-ro, Boryeong-si, Chungcheongnam-do
- Contact: 041-936-9431