Its second floor is the Mirror Room, and it has three hundred murals on its walls which incorporate carpet patterns into the "dehin" style. On its outside, there is a copper embossing which shows Bala and Mardana around a certain prophet. It is found across the street from the "Throne of the Timeless One," or Akal Takht, an administrative center. Its four entrances, each below ground level, symbolize its openness and humility. Its foundation stone was placed by Mian Mir, and it is found at the end of a causeway in the middle of the "pool of nectar." The world's most important gurdwara, it was first built by Arjan in 1604 and was stormed in 1984 by government troops. For 10 points, name this 
Its second floor is the Mirror Room, and it has three hundred murals on its walls which incorporate carpet patterns into the "dehin" style. On its outside, there is a copper embossing which shows Bala and Mardana around a certain prophet. It is found across the street from the "Throne of the Timeless One," or Akal Takht, an administrative center. Its four entrances, each below ground level, symbolize its openness and humility. Its foundation stone was placed by Mian Mir, and it is found at the end of a causeway in the middle of the "pool of nectar." The world's most important gurdwara, it was first built by Arjan in 1604 and was stormed in 1984 by government troops. For 10 points, name this building in Amritsar, the central holy structure of Sikhism.
Its second floor is the Mirror Room, and it has three hundred murals on its walls which incorporate carpet patterns into the "dehin" style.
the Golden Temple [or Harmandir; or Darbar Sahib; or Sacred Audience]