A pillar is flanked by now-headless creatures on a relief that sits atop a namesake portal, the Lion Gate, which is the entrance to this city's citadel, inside of which many of its most famous artifacts were found, including the "Nestor's Cup" and "Agamemnon's Death Mask".
One structure in this city is the subterranean "House of the Idols", in which was found a room with cave-like unhewn rock and several approximately two-foot tall clay figures with hollowed-out bottoms similar in appearance to phi- and psi-figurines. Two lions flee as a third, standing on a corpse, attacks three shielded men and a fourth with bow-and-arrow on a dagger found in this city. Two gold flowers, golden horns, and a golden snout decorate a silver bull's head rhyton found in this city, where a gold cup with two birds atop its handles was also found. Wall paintings and other works in this city depict a characteristic figure-eight shield, namesake of this city's "Shield Goddess". A pillar is flanked by now-headless creatures on a relief that sits atop a namesake portal, the Lion Gate, which is the entrance to this city's citadel, inside of which many of its most famous artifacts were found, including the "Nestor's Cup" and "Agamemnon's Death Mask". For 10 points, name this ancient Greek city, excavated by Heinrich Schliemann. 
One structure in this city is the subterranean "House of the Idols", in which was found a room with cave-like unhewn rock and several approximately two-foot tall clay figures with hollowed-out bottoms similar in appearance to phi- and psi-figurines.
Mykenai [or Mykene or Mycenae] 