Tjong A Fie Mansion is a historical building in Medan, Indonesia, that serves as a testament to the legacy of Tjong A Fie, a Hakka merchant who played a key role in the development of Medan. The mansion is a cultural melting pot, reflecting Chinese, Malay, and Art Deco influences, indicative of Medan's cosmopolitan heritage. Built in 1900, the mansion was both a residence and a hub for societal activities. Spanning 8,000 square meters, the structure boasts 35 rooms, a grand ballroom, and lush gardens, showcasing affluence and intricate architecture. The mansion's design includes imposing columns, detailed gables, and ornate furniture, highlighting the luxury of the era. Visitors can explore the well-preserved interiors, gaining insights into the affluent lifestyle of Tjong A Fie and the historical context of Medan during the colonial period. Guided tours are available, providing narratives on the mansion's history, the family's contributions to the community, and the architectural significance, ensuring an enriching experience for culture and history enthusiasts.