The Tachara or 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.
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 western entrance with a staircase was added by Artaxerxes III Ochus in the third quarter of the fourth century, more than a century after the palace had been completed.