Hansom Beach

A limestone cave in the middle of downtown, found in 1991 during construction work. About 700 m of its 1.4 km length is open to visitors, with stalactites, curtain-shaped formations and a flowstone "waterfall", and it stays at 14–15°C all year. In 2005 an endangered golden bat (red bat) was found living inside. Last entry is at 17:30, and the cave is not suitable for wheelchairs. On the hill above, a nature park has a boardwalk around sinkholes formed by the same limestone.

Donghae's main annual festival, organized by the city and the Donghae Culture and Tourism Foundation; 2026 was its 39th edition. The program changes each year, but the 2026 festival included a harvest ritual (pungnyeonje), folk games, children's activity zones, stalls run by local restaurants and evening concerts on a large outdoor stage. Some events take place at the nearby Donghae Culture and Arts Center.

A 14.5-km section of the Haeparang Trail that takes about 5 hours to walk and is rated easy. Starting near Mukho Station, the route passes Mukho Lighthouse Park, Daejin Port and Mangsang Beach before continuing into Okgye, Gangneung. The route combines coastal paths, fishing villages and a forested valley section. call 1588-7417

Billed as Korea's first pencil museum. Exhibits show how graphite becomes a pencil, and the collection of more than 3,000 pencils, gathered by the curator in over 100 cities around the world, includes some you can pick up and try.

A viewing platform above Mukho Port, built between 2016 and 2021 as part of a project to renew the hillside neighborhood. The houses on the way up have brightly painted roofs and walls, and the platform looks straight down over the harbor.

Four steep lanes (Deungdaeoreum-gil and Nongol 1-, 2- and 3-gil) climb from the harbor to Mukho Lighthouse through a fishing village where people still live. The walls are covered in murals and short poems about life in the port in its busier days. There is no parking in the lanes, and they are not suitable for wheelchairs.