All - Architectural style - Neoclassical architecture
| Residencia Heygler |
| Retszch, W. C., House |
| Reynolds, Dr. Carl V., House |
| Rhode Island Statehouse |
| Rialto Building |
| Rialto Theater |
| Rialto Theater |
| Rialto Theatre |
| Ricards House-Linden Hall |
| Riceland Hotel |
| Richards, T.G., and Company Store |
| Richmond Carnegie Library |
| Richwood Hall |
| Rickman Hotel |
| Riddle Block #11 |
| Riddle Block #9 |
| Riegel Ridge Community Center |
| Riggs National Bank |
| Riggs-Tompkins Building |
| Riley, Charles, House |
| Ringgold County Courthouse |
| Ripley Historic District |
| Ripple House |
| Ripple, Otto, Agency |
| Rippon-Kinsella House |
| Ritch-Carter-Martin House |
| Ritchie Block |
| Ritchie County Courthouse |
| Riverside Hotel |
| Riverside School |
| River Street School |
| Riverview Hotel |
| Riviera Apartments |
| Riviera, The |
| Roberts Building |
| Roberts-Bush-Roberts House |
| Roberts, Col. William T., House |
| Roberts, Nathan J. and Nancy, House |
| Robertson, John, Jr., House |
| Robey Theatre |
| Robidoux School |
| Robinson House |
| Robinson, J. C., House |
| Robles, Paso, Carnegie Library |
| Rockaway Courthouse |
| Rock Creek School |
| Rockford Morning Star Building |
| Rockford Woman’s Club |
| Rockingham County Courthouse |
| Rockland Memorial Library |
| Rocky Creek Bridge No. 01089 |
| Rocky Ford Post Office |
| Rocky Mountain Bank Note Company Building |
| Roeser, Oscar, House |
| Rogers House |
| Rogue River Bridge No. 01172 |
| Ronan, Mary, T., School |
| Roosevelt School |
| Root-Badger House |
| Rosebud County Courthouse |
| Rose Building |
| Rose Hill |
| Roslindale Substation |
| Roslyn National Bank and Trust Company Building |
| Ross House |
| Rountree, J. H., Mansion |
| Rudolf Hotel |
| Russell-Heath House |
| Russell Town Hall |
| Russellville Masonic Temple |
| Rust, William Ross, House |
| Ryan House |
| Sabine Hall |
| Saco Central Fire Station |
| Sacramento Bank Building |
| Sacred Heart Church |
| Saenger Theater |
| Saint Benedict Joseph Labre Parish |
| Saint James Court Apartments |
| Saint Louis Provident Association Building |
| Saint Paul's Vestry House |
| Salaam Temple |
| Saline County Courthouse |
| Salmon Odd Fellows Hall |
| Salt Lake Stock and Mining Exchange Building |
| Samuel Brown School |
| San Angelo National Bank Building |
| San Antonio Loan and Trust Building |
| San Augustine County Courthouse and Jail |
| San Bernardino County Court House |
| Sanborn, Henry B. and Ellen M., House |
| Sanborn House |
| Sanderson, Julia, Theater |
| Sandpoint High School |
| Sandstone School |
| Sandy Second Ward Chapel |
| Sanitol Building |
| San Jacinto County Courthouse |
| San Jacinto Senior High School |
| San Pedro Springs Park |
Data from United States Park Service and Wikidata
