In the heart of the historic part of Ranong lies a fascinating place that transports visitors back to the era of the tin rush — the Ranong Governor's Residence. This site, also known as Baan Roi Pi Thian Sue (Thian Sue's 100-Year-Old House), is an old mansion with over a century of history that has been converted into a private museum.
Built in the 1890s, the building is a prime example of Sino-Thai architecture. Its design harmoniously blends the solid brick walls of the first floor with the elegant wooden structures of the second, which is characteristic of the "Baba-Nyonya" style common in the southern region of Thailand. This house is not just an architectural monument but a living chronicle of the first Chinese settlers who contributed immensely to the province's development.

Today, the residence is open to anyone wishing to touch the past. The interior halls are filled with authentic artifacts: here you can see antique furniture, everyday household items, and rare archival photographs that tell the story of an influential family's life and the economic prosperity of Ranong. The museum operates on a charitable basis, maintaining a warm, homey atmosphere supported by the descendants of the original owners.