Many of these historic sites are well-known only among the locals and often have few visitors, which can make them appealing to those wishing to escape the crowded palaces and temples of Korea's major cities.

For an exhaustive list of tourist attractions in the Seosan-Haemi area, detailed English-language maps are available at the Seosan Intercity Bus Terminal.

The fortress was used as a military command post controlling the Chuncheong-do region and provided defense against Japanese pirates along Korea's western coast.

As the town of Haemi expanded in the early 20th century, much of the fortress was torn down to allow additional urban development, but a major restoration work was undertaken in 1973.

[3] Approximately 200 meters from Haemieupseong Fortress is the Yeosutgol Holy Ground, where Korean Catholics were buried alive, drowned and otherwise killed en masse during the Byeongin Persecutions.

Built in 1484 (the 15th year of King Seongjong's reign), Gaesimsa is one of only a handful of wooden buildings in Korea which date past the 17th century.

In summer, the monsoon season lasts about three weeks in June or July and is characterized by very strong winds and heavy rainfall, although the severity of both of these phenomena has been decreasing in recent years.

Representative companies include HD Hyundai Oilbank Co., Ltd., SK On Co., Ltd., Lotte Chemical Co., Ltd., Hanwha Total Energy Co., Ltd., LG Chemical Co., Ltd., HD Hyundai Cosmo Co., Ltd., and E1 Co., Ltd.[7] Hanseo University (한서대학교), a private university established in 1992, has 8,500 students and 50 departments that are staffed by 250 full-time faculty members.

The university provides courses in Chiropractic, a wide range of liberal arts, design, and engineering disciplines, and hosts aviation and flight-training schools.

Under optimal conditions, Express buses can reach Seoul's Gangnam Terminal in approximately 90 minutes, but can take up to 2.5 hours in the event of heavy traffic.