A letterbox taller than a person
Cheonan's Korea Postal Museum has a four-metre Millennium Letterbox. The museum says it was created and donated for the 1999 millennium celebrations and listed by Guinness in 2000. Its huge scale makes a striking starting point for a visit about handwritten mail.
What happens after posting a letter?
The official activity guide introduces writing a message, affixing a stamp, applying a date mark and posting the letter. Visitors can also learn about collection, sorting, transport and delivery. It turns an everyday form of communication into a physical journey.
Uniforms and postboxes from abroad
Displays trace Korean postal and financial services. The museum website also introduces children's postal-uniform dress-up experiences featuring Korea, Denmark and Brazil, plus rubbing activities based on early postal imagery. Daily availability, reservations and any additional activity fee remain unconfirmed.
Before visiting
The address is 11-14 Yangjimal 1-gil, Dongnam-gu, Cheonan, Chungcheongnam-do, South Korea. Published hours are 09:00–18:00 and museum admission is free. The homepage says Sundays and holidays are closed, while the detailed visitor page separately says Saturdays are currently closed for internal reasons. Phone +82-41-560-5900 for weekend plans. The operator lists bus routes 51/52 from Cheonan Station or Bus Terminal but warns services can be irregular; verify the live timetable.