The Tachara - Palace of Darius (Tachara of Darius, Mirror Hall) is one of the interior Persepolis Palaces. The meaning in olden Persian is wintry home.
The palace is made of gray stone. It was built by Darius I and was completed after his death in 486 by his son and successor Xerxes I.
Its ruins are immediately south of the Apadana.

This palace was one of the few structures that escaped destruction in the burning of the complex by Alexander. The big stone structures have survived; only the parts of wood have vanished.

The Tachara, measuring 1,160 square meters (12,486 sq. feet), is the smallest of the palace buildings in Persepolis. Its main room is a mere 15.15m x 15.42 m (49.70 ft. x 50.59 ft.) with three rows of four columns.