Herod's Palace in Wikipedia
Herod's Palace was a fortified palace, built by Herod the
Great to protect the Old City of Jerusalem. Part of Herodian
architecture, the palace consisted of two principal buildings,
each with its banquet halls, baths and accommodations for
hundreds of guests.
The archaeological remains of Herod's Palace, however, are
scarce. During the 1970s excavations an exit of a water drain
belonging to Herod's Palace was discovered. It transported
water from the palace into the Valley of Hinnom.