[PAR] [TLE] United States Bullion Depository [SEP] The United States Bullion Depository, often known as Fort Knox, is a fortified vault building located within the United States Army post of Fort Knox, Kentucky.  The vault is used to store a large portion of United States official gold reserves and occasionally other precious items belonging or entrusted to the federal government.  It is estimated to hold roughly 2.3% of all the gold ever refined throughout human history. [PAR] [TLE] North Carolina Granite Corporation Quarry Complex [SEP] North Carolina Granite Corporation Quarry Complex is a historic granite quarry and national historic district located at Mount Airy, Surry County, North Carolina.  The district encompasses 22 contributing buildings, 1 contributing site, and 8 contributing structures in an area approximately one mile long and 1/3 mile wide.  Notable contributing resources include the cutting shed (1927), the office building (1928), and a building originally used as a blacksmith shop.  It is the world's largest open faced granite quarry.  Granite from the quarry was used to build the United States Bullion Depository at Fort Knox, the Arlington Memorial Bridge in Washington, the Wright Brothers National Memorial at Kitty Hawk, and the Albert Einstein Memorial in Washington.
[PAR] [TLE] United States Bullion Depository [ SEP ] The United States Bullion Depository , often known as Fort Knox , is a fortified vault building located within the United States Army post of Fort Knox , Kentucky . The vault is used to store a large portion of United States official gold reserves and occasionally other precious items belonging or entrusted to the federal government . It is estimated to hold roughly 2.3 % of all the gold ever refined throughout human history . [PAR] [TLE] North Carolina Granite Corporation Quarry Complex [ SEP ] North Carolina Granite Corporation Quarry Complex is a historic granite quarry and national historic district located at Mount Airy , Surry County , North Carolina . The district encompasses 22 contributing buildings , 1 contributing site , and 8 contributing structures in an area approximately one mile long and 1/3 mile wide . Notable contributing resources include the cutting shed ( 1927 ) , the office building ( 1928 ) , and a building originally used as a blacksmith shop . It is the world 's largest open faced granite quarry . Granite from the quarry was used to build the United States Bullion Depository at Fort Knox , the Arlington Memorial Bridge in Washington , the Wright Brothers National Memorial at Kitty Hawk , and the Albert Einstein Memorial in Washington .
What type of structure does North Carolina Granite Corporation Quarry Complex and United States Bullion Depositor have in common?
What type of structure does North Carolina Granite Corporation Quarry Complex and United States Bullion Depositor have in common ?
building
building