Lincoln's Tomb was designated one of the first National Historic Landmarks in 1960 and thus became one of the first National Historic Places in 1966 when that designation was created.
Lincoln's burial vault is located 30 inches behind and 10 feet below the 7 ton reddish granite block inside the tomb.
The nose on the large bronze Lincoln head at the base of the tomb is kept polished by the thousands of visitors who rub it for good luck.
Oak Ridge is the 2nd most visited cemetery in the country, after Arlington National Cemetery.