Passage: The district was established by King Chulalongkorn, who wanted to escape the confines of Rattanakosin Island. Vimanmek Mansion was constructed in 1900 completely out of teak, and was used as a royal palace for a short time, but was abandoned in 1908. Reconstructed in 1992, it is now a major tourist attraction. Chitralada Royal Villa was built by King Vajiravudh (Rama VI), and was a residence of King Bhumibol Adulyadej. The large park around the palace was used by the king for agricultural research.

Question: What was Vimanmek Mansion made from?
teak