Istana Jahar, Royal museum in Kota Bharu, Malaysia

Istana Jahar is a wooden palace in Kota Bharu featuring polished hardwood floors and ornately carved wall panels across its two stories. The structure displays traditional Malay architectural craftsmanship with details visible throughout each room.

Istana Jahar was begun in 1855 under Sultan Muhammad II as a residence for his grandson Raja Bendahara Long Kundor, and construction continued under Sultan Ahmad until completion. Sultan Muhammad III later used it as a royal residence alongside Istana Balai Besar. In 1911 Sultan Muhammad IV repaired the building and gave it the name Istana Jahar, after a jahar tree in its grounds.

The building displays traditional weapons, royal regalia, and ceremonial garments belonging to Kelantan rulers. Visitors can trace the lineage and roles of the ruling family through objects and genealogical records on display.

The building is open from Saturday through Wednesday during daytime hours and spans two stories with multiple rooms to explore. Comfortable footwear helps when navigating the wooden floors and staircases between levels.

The palace took its name from a jahar tree that grew on the grounds during construction. This tree became so identified with the site that it inspired the building's name.