The Goseong DMZ Museum itself is free to enter and park at, but reaching it requires a visitor-registration procedure. The official museum guide instructs visitors to stop roughly 10 km ahead at the Unification Observatory registration office, 481 Geumgangsan-ro, Hyeonnae-myeon, Goseong, complete visitor registration and a security briefing, and pay the separate Unification Observatory admission and parking fees. Museum advance booking is not needed, but the preceding procedure still applies.
The museum is at 369 Tongiljeonmangdae-ro, Hyeonnae-myeon. It opens 9 a.m.–6 p.m. from March 1 through October 31 and 9 a.m.–5 p.m. from November 1 through February 28. Last entry is one hour before closing. It closes on Mondays and January 1, with a holiday-Monday exception. A typical visit takes 40–90 minutes.
Food and pets other than guide dogs are prohibited in exhibition galleries. Group tour inquiries: 033-634-8553. Check the separately charged observatory fees and same-day entry rules before leaving.