Private owner

Cary Building (New York County, New York)
Cary Building (Wayne County, Michigan)
Cary House (White County, Arkansas)
Cary Lawn (Weakley County, Tennessee)
Cary Station (Morris County, New Jersey)
Cary, Otis, House (Norfolk County, Massachusetts)
Casa Alvarez (St. Louis County, Missouri)
Casa Amadeo, antigua Casa Hernandez (Bronx County, New York)
Casa Blanca (Cleveland County, Oklahoma)
Casa Caprona (St. Lucie County, Florida)
Casa Coe da Sol (Pinellas County, Florida)
Casa De Josefina (Polk County, Florida)
Casa De Muchas Flores (Pinellas County, Florida)
Casa de Palmas (Hidalgo County, Texas)
Casa de Parley Johnson (Los Angeles County, California)
Casa de Rosas (Los Angeles County, California)
Casa de Tableta (San Mateo County, California)
Casa Del Mar (Sarasota County, Florida)
Casa del Rey Apartments (Oakland County, Michigan)
Casa Deldra (Essex County, New Jersey)
Casa Grande Dispatch (Pinal County, Arizona)
Casa Grande Hospital (Pinal County, Arizona)
Casa Grande Hotel (Pinal County, Arizona)
Casa Grande Hotel (Beckham County, Oklahoma)
Casa Grande Stone Church (Pinal County, Arizona)
Casa Grande Woman's Club Building (Pinal County, Arizona)
Casa Italina (New York County, New York)
Casa Maria (Albemarle County, Virginia)
Casa Marina Hotel (Duval County, Florida)
Casa Rio (Lee County, Florida)
Casados House (Rio Arriba County, New Mexico)
Cascade Plantation (Rockingham County, North Carolina)
Cascine (Franklin County, North Carolina)
Case Farmstead (Hunterdon County, New Jersey)
Case House (Wood County, West Virginia)
Case Library (Douglas County, Kansas)
Case Memorial-Seymour Library (Cayuga County, New York)
Case, Benomi, House (Hartford County, Connecticut)
Case--Shiras--Dearmore House (Baxter County, Arkansas)
Casement House (Lake County, Ohio)
Casements Annex (Volusia County, Florida)
Casements, The (Volusia County, Florida)
Casey House (Williamson County, Texas)
Casey Jones Wreck Site (Yazoo County, Mississippi)
Casey's Diner (Middlesex County, Massachusetts)
Tiny 10-stool diner is one of the oldest and best-preserved in existence.
Casey, Silas, Farm (Washington County, Rhode Island)
Cashpoint Plantation House (Bossier Parish, Louisiana)
Cashua Street-Spring Street Historic District (Darlington County, South Carolina)
Casino Hall (Bastrop County, Texas)
Casino Theatre (Sanpete County, Utah)
Casiville Bullard House (Ramsey County, Minnesota)
Cason and Virginia Callaway House (Harris County, Georgia)
Cason House (Franklin County, Georgia)
Caspar Westervelt House (Bergen County, New Jersey)
Casparus F. Pruyn House (Albany County, New York)
Casper Kruse House (Franklin County, Missouri)
Casper M. Sanger House (Waukesha County, Wisconsin)
Victorian Gothic house that has been a summer home, sanitarium and convent
Casper Supply Company of SD (Pennington County, South Dakota)
Casper Zorn Farmhouse (Marion County, Oregon)
Caspian Community Center (Iron County, Michigan)
Caspian Mine Headframe (Iron County, Michigan)
Caspiana Plantation Store (Natchitoches Parish, Louisiana)
Cass and King Street Residential Historic District (La Crosse County, Wisconsin)
A collection of 219 of the finest Prairie Style and Queen Anne in La Crosse
Cass Motor Sales (Wayne County, Michigan)
Cass--Davenport Historic District (Wayne County, Michigan)
Cass--Juneau Street Historic District (Milwaukee County, Wisconsin)
Active neighborhood of homes, apartments, schools and churches
Cass--Wells Street Historic District (Milwaukee County, Wisconsin)
Cassel's Store (Liberty County, Georgia)
Casselton Commercial Historic District (Cass County, North Dakota)
Cassidy Farmhouse (Iowa County, Wisconsin)
Cassidy House (Pennington County, South Dakota)
Cassidy Mill (Mora County, New Mexico)
Cassill Place Historic District (Jasper County, Missouri)
Cassimus House (Montgomery County, Alabama)
Cassina Point (Charleston County, South Carolina)
Cassinelli Gin House (Val Verde County, Texas)
Cassius Clark Thompson House (Columbiana County, Ohio)
Casstown Lutheran Stone Church (Miami County, Ohio)
Cassville Post Office (Bartow County, Georgia)
Castalian Springs (Sumner County, Tennessee)
Casterton House (Licking County, Ohio)
Castle Apartments (Bernalillo County, New Mexico)
Castle Hall (Caroline County, Maryland)
Castle Heights Academy Historic District (Wilson County, Tennessee)
Castle Hill (Albemarle County, Virginia)
Castle Hill (Essex County, Massachusetts)
Castle on 19th Street (Laramie County, Wyoming)
Castle Pinckney (Charleston County, South Carolina)
Castle Rock (Wyandotte County, Kansas)
Castle Rock (Putnam County, New York)
Castle Rock Depot (Douglas County, Colorado)
Castle Street Row (Worcester County, Massachusetts)
Castle Terrace Historic District (Clinton County, Iowa)
Castle Tower Apartments (Cook County, Illinois)
Castle, Dr. Andrew, House (New Haven County, Connecticut)
Castle, The (Middlesex County, Massachusetts)
Castle, The (San Diego County, California)
Castleberry Boarding House (Livingston Parish, Louisiana)
Castleberry Hill Historic District (Fulton County, Georgia)
Castleberry--Harrington Historic District (Faulkner County, Arkansas)
Castlerun Historic District (Russell County, Virginia)
Castleton Medical College Building (Rutland County, Vermont)
Castlewood (Chesterfield County, Virginia)
Castner--Knott Building (Davidson County, Tennessee)
Caswell House (Williamson County, Texas)
Caswell Public Library (Former) (Cumberland County, Maine)
Cat Rock Sluice of the Roanoke Navigation (Campbell County, Virginia)
Cataldo Mission (Kootenai County, Idaho)
Catalina American Baptist Church (Pima County, Arizona)
Catalpa (Adair County, Iowa)
Catalpa (West Feliciana Parish, Louisiana)
Catalpa Farm (Somerset County, Maryland)
Cataract Engine Company No. 3 (Bristol County, Massachusetts)
Catasauqua Residential Historic District (Lehigh County, Pennsylvania)
Catawba Island Wine Company (Ottawa County, Ohio)
Cate House (Hancock County, Maine)
Cate House (Tangipahoa Parish, Louisiana)
Catedral Evangelica Reformada (Essex County, New Jersey)
Catfish Creek Baptist Church (Dillon County, South Carolina)
Cathedral Basilica of the Assumption (Kenton County, Kentucky)
Cathedral Church of St. Paul Complex (Wayne County, Michigan)
Cathedral Mansions Apartment Buildings (Washington, District of Columbia)
Cathedral of All Saints (Albany County, New York)
Cathedral of Our Merciful Saviour (Rice County, Minnesota)
Cathedral of Saint Helena (Lewis and Clark County, Montana)
Cathedral of Saints Peter and Paul (Philadelphia County, Pennsylvania)
Cathedral of Saints Peter and Paul (Providence County, Rhode Island)
Cathedral of St. Augustine (St. Johns County, Florida)
Cathedral of St. George Historic District (Suffolk County, Massachusetts)
Cathedral of St. James and Parish Hall (St. Joseph County, Indiana)
Cathedral of St. Paul (Worcester County, Massachusetts)
Cathedral of the Assumption (Jefferson County, Kentucky)
Cathedral of the Immaculate Conception (Denver County, Colorado)
Cathedral of the Immaculate Conception (Albany County, New York)
Cathedral of the Immaculate Conception (Cumberland County, Maine)
Cathedral of the Immaculate Conception (Calcasieu Parish, Louisiana)
Cathedral of the Madeleine (Salt Lake County, Utah)
Cathedral of the Sacred Heart (Essex County, New Jersey)
Cathedral of the Sacred Heart (Richmond, Virginia)
Cathedral Parish School (Ohio County, West Virginia)
Cather Farm (Mitchell County, Kansas)
Cather House (Webster County, Nebraska)
Catherine Lake Historic District (Onslow County, North Carolina)
Catherine Street Historic District (Hamilton County, Indiana)
A neighborhood of Queen Anne, Craftsman and Foursquare houses
Catherine White House (Multnomah County, Oregon)
Catholic Cemetery (Claiborne County, Mississippi)
Catholic Church and Rectory (Montgomery County, Tennessee)
Catholic Presbyterian Church (Chester County, South Carolina)
Historic church near Chester, SC
Catlett Historic District (Fauquier County, Virginia)
Catlett House (Boyd County, Kentucky)
Catlett House (Staunton, Virginia)
Catlettsburg National Bank (Boyd County, Kentucky)
Catlin Hall, Wilkes College (Luzerne County, Pennsylvania)
Catlin Wilson House (Greene County, Alabama)
A historic Greek Revival style house in Eutaw, Alabama.
Catlow Theatre (Lake County, Illinois)
Listed as on of the top ten theaters in the United States
Cato Hill Historic District (Providence County, Rhode Island)
Cato House (Barbour County, Alabama)
Catskill Charcoal Ovens (Colfax County, New Mexico)
Catt, Carrie Chapman, House (Westchester County, New York)
Cattle Bank (Champaign County, Illinois)
Cattle Creek Campground (Orangeburg County, South Carolina)
Cauley-Wheeler Memorial Building (Richmond County, Georgia)
Causeway, The (Washington, District of Columbia)
Causeyville Historic District (Lauderdale County, Mississippi)
Cavalry Corrals (Pima County, Arizona)
Cavanaugh, James House (Summit County, Utah)
Cavanaugh-Zetek House (Johnson County, Iowa)
Cave City Commercial District (Barren County, Kentucky)
Cave Creek Service Station (Maricopa County, Arizona)
Cave Hill Cemetery (Jefferson County, Kentucky)
Cave Johnson House (Boone County, Kentucky)
Cave Lake School (Kootenai County, Idaho)
Cave Place (Fayette County, Kentucky)
Cave Spring (Fayette County, Kentucky)
Cave Spring Farm (Warren County, Kentucky)
Cave Spring Female Academy (Floyd County, Georgia)
Cave Spring Railroad Station (Floyd County, Georgia)
Cavellero House (Mobile County, Alabama)
Cavender's Store (Walker County, Georgia)
Cavendish Universalist Church (Windsor County, Vermont)
Cavitt House (Brazos County, Texas)
Caxton Building (Cuyahoga County, Ohio)
Cazenovia Village Historic District (Madison County, New York)
CB&Q Lewistown Depot (Lewis County, Missouri)
CB&Q Mound City Depot (Holt County, Missouri)
CCC Camp Custer Officers' Cabin (Custer County, South Dakota)
CCC Ranch Headquarters (Texas County, Oklahoma)
Cecil Apartments (Baltimore, Maryland)
Cecil Baker Round Barn (Stutsman County, North Dakota)