All - Architectural style - Victorian architecture
| Miller Building |
| Miller, Charles A., House |
| Milroy, John, House |
| Milwaukee Road Depot |
| Mohawk Valley Grange Hall |
| Moses, G.C., Block |
| Mosman House |
| Mt. Pleasant Baptist Church |
| Mueller Homestead |
| Municipal Building and Central Fire Station, 340 |
| Murphy, Mrs. J. V., House |
| Myrene Apartment Building |
| National Exchange Hotel |
| Neely, Sr., Aaron and Sarah, Farm |
| Newark Orphan Asylum |
| Newberry, Milo Prentice, House |
| New Era Building |
| Nichols, J.L., House and Studio |
| Nisbett Building |
| North Carolina School for the Deaf: Main Building |
| North Town Hall |
| Norton's Corner School |
| Norwell Residence |
| Oakley, Ami and Amanda, House |
| Oberg-Metcalf House |
| Oblate Park Historic district |
| Oconomowoc Depot |
| Odenweller, F. F.-James P. and Nettie Morey House |
| Olcovich-Meyers House |
| Old Bastrop Co. Pavilion |
| Old Cawker City Library |
| Old Courthouse |
| Old Fort Bliss |
| Old Fourth Ward Southeast Historic District |
| Old Frio County Jail |
| Old Harbor U.S. Life Saving Station |
| Old Post Office |
| Olive, L. W., House |
| Omaha Hotel |
| Orgain, Sarah Jane, House |
| Organ, Alexander, House |
| Oshtemo Town Hall |
| Oughton, John R., House |
| Ouray City Hall and Walsh Library |
| Owen, Dr. Thomas McAdory, House |
| Pace House |
| Palace Amusements |
| Palo, John and Justina, Homestead |
| Parker, Joseph William, Farm |
| Parker's Opera House |
| Pawtucket Congregational Church |
| Pearcy, J. H., House |
| Pemberton House |
| Pennsylvania Railroad Freight Station |
| Pennsylvania Railroad Station-Latrobe |
| People's Co-op Building |
| Pershing House |
| Peterson-Dumesnil House |
| Phieffer House |
| Philadelphia Naval Shipyard Historic District |
| Pilotburg Church |
| Pinal County Courthouse |
| Pioneer Implement Company |
| Pitkin County Courthouse |
| Plambeck, Joachim, House |
| Pledger, J. W., House |
| Plymouth Congregational Church |
| Poppenhusen Institute |
| Powderly, Terence V., House |
| Prentice, Alonzo T., House |
| Presque Isle County Courthouse |
| Quinn, A. V., House |
| Rabensburg House |
| Randolph Tabernacle |
| Ransley Apartment Building |
| Reasoner, Egbert, House |
| Redd, Lemuel H., Jr., House |
| Red Oak Firehouse and City Jail |
| Reedy, J. H., House |
| Reichardt-Low House |
| Renville County Courthouse and Jail |
| Renz Block |
| Reynolds, Anson O., House |
| Reynolds House |
| Richardi, Henry, House |
| Richmond Relief Society Hall |
| Rich-Steeper House |
| Rickeman Grocery Building |
| Rider-Pugh House |
| Rinckel Mansion |
| Rio Grande City Downtown Historic District |
| Rioux, Angeline Champeau, House |
| Rogers-Knutson House |
| Rosedale Plantation |
| Rose Hill |
| Rouser House |
| Russell, Charles B., House |
| Saint Bernard's Chruch Complex |
| Saint Helena Southern Pacific Railroad Depot |
| Saint James Second Street Baptist Church |
Data from United States Park Service and Wikidata
