Tajhat "Rajbari" or "Zaminder's Palace" is situated in Rangpur district of Bangladesh. It is 10 minutes drive from Rangpur town. The palace was built by Maharaja Kumar Gopal Lal Roy in the beginning of the 20th century. He was a descendent of a Hindu Khatari who migrated from Punjab of Pakistan. He was a jeweler by profession. It is believed that from the conspicuous appearance of his Taj or jeweled crown his estate derived the name of Tajhat.
After the end of the British Raj, the building was abandoned and decayed rapidly, although it was used for a few years as a courthouse during the 1980's. In the year 2004, it was largely restored and turned into a museum with ancient inscriptions, art and coins from the area on display.
Now it is a very popular place where a lot of visitors from different parts of Bangladesh come everyday to visit it. The museum is open everyday of the week except Sunday.