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The Special Interests category contains 5 commons and 60 bases

Architecture Commons 151,346

Military Commons 37,893

Aviation Commons 21,824

Boats Commons 21,509

Automotive Commons 37,713

Boats has about 24 newly added topics including USS Lowell, USS Killarney and USS Marguerite
Architecture has about 400 newly added topics including Grosvenor House, Dar Al-Handasah and Vecchi Ketchup Factory
Aviation has about 7 newly added topics including Royal Aircraft Factory R.E.5 and Royal Aircraft Factory R.E.7
Military has about 5,000 newly added topics including Kress von Kressenstein, John Bullock Clark and Ken Kearney