 | 1724 HighlandOrt · Los Angeles | Antony-22 | CC BY-SA 3.0 | Original ↗ |
 | 1767 MilestonesOrt · Boston | User:Magicpiano | CC BY-SA 4.0 | Original ↗ |
 | 17 Bruton StreetOrt · London | No Swan So Fine | CC BY-SA 4.0 | Original ↗ |
 | 17 King Street, BristolOrt · Bristol | William Avery | CC BY-SA 2.5 | Original ↗ |
 | 17 New Wakefield StreetOrt · Manchester | Jza84 | CC BY-SA 3.0 | Original ↗ |
 | 17th Street PlazaOrt · Denver | Jeffrey Beall | CC BY-SA 3.0 | Original ↗ |
 | 1800 ClubOrt · Miami | Averette | CC BY 3.0 | Original ↗ |
 | 1800 WhitleyOrt · Los Angeles | Los Angeles | CC BY-SA 3.0 | Original ↗ |
 | 180 E 88th StreetOrt · New York | Deansfa | CC BY-SA 4.0 | Original ↗ |
 | 1812 John Wickham HouseOrt · Richmond | Unknown authorUnknown author | Public domain | Original ↗ |
 | 181 FremontOrt · San Francisco | Dead.rabbit | CC BY-SA 4.0 | Original ↗ |
 | 1872 California-Nevada State Boundary MarkerOrt · Reno | ThirteenOaks | CC BY-SA 3.0 | Original ↗ |
 | 1874 United States Old Mint BuildingOrt · San Francisco | Sanfranman59 | CC BY-SA 4.0 | Original ↗ |
 | 18 Stafford TerraceOrt · London | Ricardalovesmonuments | CC BY-SA 4.0 | Original ↗ |
 | 18 Yorkville CondosOrt · Toronto | Dhodges | CC BY-SA 3.0 | Original ↗ |
 | 1900 Rittenhouse Square ApartmentsOrt · Philadelphia | Smallbones | Public domain | Original ↗ |
 | 1909 RittenhouseOrt · Philadelphia | Daderot | Public domain | Original ↗ |
 | 190 StrandOrt · London | Philafrenzy | CC BY-SA 4.0 | Original ↗ |
 | 191 N. WackerOrt · Chicago | Sepreece | CC BY-SA 3.0 | Original ↗ |
 | 1940 Air Terminal MuseumOrt · Houston | Mlickliter | CC BY-SA 3.0 | Original ↗ |
 | 194 Riverside Owners CorporationOrt · New York | Deansfa | CC BY-SA 4.0 | Original ↗ |
 | 197 Yonge StreetOrt · Toronto | GTD Aquitaine | Public domain | Original ↗ |
 | 19 BerggasseOrt · Wien | C.Stadler/Bwag | CC BY-SA 4.0 | Original ↗ |
 | 19 DutchOrt · New York | TastyPoutine | CC BY-SA 4.0 | Original ↗ |
 | 19. DzielnicaOrt · Warschau | Panek | CC BY-SA 4.0 | Original ↗ |
 | 19 Princelet StreetOrt · London | Bobulous | CC BY-SA 4.0 | Original ↗ |
 | 19 Rue Cépré 75015 ParisOrt · Paris | Mbzt | CC BY-SA 4.0 | Original ↗ |
 | 19 St Marks ApartmentsOrt · New York | Americasroof | CC BY 3.0 | Original ↗ |
 | 19th Avenue/Camelback stationOrt · Phoenix | Ixnayonthetimmay | CC BY-SA 4.0 | Original ↗ |
 | 1 Beekman Place Condos & AptsOrt · New York | Elisa.rolle | CC BY-SA 4.0 | Original ↗ |
 | 1 Furnival SquareOrt · Sheffield | N Chadwick | CC BY-SA 2.0 | Original ↗ |
 | 1 Ilica StreetOrt · Zagreb | Suradnik13 | CC BY-SA 4.0 | Original ↗ |
 | 1 Jarochowskiego StreetOrt · Posen | MOs810 | CC BY-SA 3.0 | Original ↗ |
 | 1 Macquarie PlaceOrt · Sydney | Enochlau | CC BY-SA 3.0 | Original ↗ |
 | 1 ManécanterieOrt · Lyon | Gonedelyon | CC BY-SA 3.0 | Original ↗ |
 | 1 Milligan PlaceOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 1 OperaOrt · Neapel | Armando Mancini | CC BY-SA 2.0 | Original ↗ |
 | 1 Palace GreenOrt · London | Edwardx | CC BY-SA 3.0 | Original ↗ |
 | 1 Rue Auguste Maquet, 75016 Paris, FranceOrt · Paris | Wikimedia Commons / Mu | CC BY-SA 3.0 | Original ↗ |
 | 1 Rue de StrasbourgOrt · Grenoble | JPC38 | CC BY-SA 4.0 | Original ↗ |
 | 1 Square PhillipsOrt · Montreal | D. Benjamin Miller | CC0 | Original ↗ |
 | 1st Avenue BridgeOrt · Seattle | United States Environmental Protection Agency | Public domain | Original ↗ |
 | 1st Regiment Infantry National Guard Of PhiladelphiaOrt · Philadelphia | Smallbones | CC0 | Original ↗ |
 | 1st Street stationOrt · Long Beach | Epolk | CC BY-SA 3.0 | Original ↗ |
 | 1 West EndOrt · New York | Jim.henderson | CC BY-SA 4.0 | Original ↗ |
| 1 YorkvilleOrt · Toronto | Dhodges | CC BY-SA 3.0 | Original ↗ |
 | 200 AmsterdamOrt · New York | 句 | CC BY-SA 4.0 | Original ↗ |
 | 200 CowgateOrt · Edinburgh | Nicholas Mutton | CC BY-SA 2.0 | Original ↗ |
 | 200 Liberty StreetOrt · New York | Don Ramey Logan | CC BY-SA 4.0 | Original ↗ |
 | 200 Madison AvenueOrt · New York | Jim.henderson | CC BY-SA 4.0 | Original ↗ |
 | 200 MarketOrt · Portland | M.O. Stevens | CC BY 3.0 | Original ↗ |
 | 200 Rue de la LoiOrt · Brüssel | No.3046 Héliotypie de Graeve, Gand, cf. [1 | Public domain | Original ↗ |
 | 200 Vesey StreetOrt · New York | Aude | CC BY-SA 2.5 | Original ↗ |
 | 2021 AtwaterOrt · Montreal | Alexcaban | CC BY-SA 3.0 | Original ↗ |
 | 203 East 29th StreetOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 203 Prince StreetOrt · New York | Gryffindor | CC BY-SA 3.0 | Original ↗ |
 | 205 Yonge StreetOrt · Toronto | SimonP | CC BY-SA 3.0 | Original ↗ |
 | 206 Bell ApartmentsOrt · Seattle | Joe Mabel | CC BY-SA 3.0 | Original ↗ |
 | 20 BroadOrt · New York | Irving Underhill | Public domain | Original ↗ |
 | 20 Chapel Street SignOrt · Liverpool | Frombowen | CC BY-SA 4.0 | Original ↗ |
 | 20 East End AvenueOrt · New York | Superraptor123 | CC BY-SA 4.0 | Original ↗ |
 | 20 Exchange PlaceOrt · New York | ButtonwoodTree at English Wikipedia | Public domain | Original ↗ |
 | 20 Fenchurch StreetOrt · London | Diego Delso | CC BY-SA 4.0 | Original ↗ |
 | 20 ParkOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 20 Pine StreetOrt · New York | Kidfly182 | CC BY 4.0 | Original ↗ |
 | 20 River TerraceOrt · New York | Gryffindor | CC BY-SA 3.0 | Original ↗ |
 | 210 BoweryOrt · New York | Tony | CC BY-SA 3.0 | Original ↗ |
 | 210 East 68th StreetOrt · New York | Epicgenius | CC BY-SA 4.0 | Original ↗ |
 | 211 Elizabeth Street CondominiumsOrt · New York | Brafford33 | CC BY-SA 4.0 | Original ↗ |
 | 211 North ErvayOrt · Dallas | Dfwcre8tive | CC BY-SA 3.0 | Original ↗ |
 | 21_21 Design SightOrt · Tokio | Wiiii | CC BY-SA 3.0 | Original ↗ |
 | 21–22 High Street, CoventryOrt · Coventry | Simon Cobb | CC0 | Original ↗ |
 | 212 West 72nd StreetOrt · New York | Scan by NYPL | Public domain | Original ↗ |
 | 2130 Adam Clayton Powell BoulevardOrt · New York | Americasroof | CC BY-SA 3.0 | Original ↗ |
 | 21 Beacon St Apt 6QOrt · Boston | Daderot | Public domain | Original ↗ |
 | 21 ChelseaOrt · New York | Peaceray | CC BY-SA 3.0 | Original ↗ |
 | 21c Museum Hotel CincinnatiOrt · Cincinnati | DaveMenninger | CC BY-SA 3.0 | Original ↗ |
 | 21 on CenterOrt · Reno | Visitor7 | CC BY-SA 3.0 | Original ↗ |
 | 21 West End ApartmentsOrt · New York | Kidfly182 | CC BY-SA 4.0 | Original ↗ |
 | 220 Meridian Luxury ResidencesOrt · Indianapolis | IndyTaylor | CC BY-SA 4.0 | Original ↗ |
 | 222 Jarvis StreetOrt · Toronto | SimonP | CC BY-SA 3.0 | Original ↗ |
| 222 RittenhouseOrt · Philadelphia | Daderot | Public domain | Original ↗ |
 | 222 Second StreetOrt · San Francisco | Atomiccharles | CC BY-SA 4.0 | Original ↗ |
 | 225 LafayetteOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 225 Liberty StreetOrt · New York | Aude | CC BY-SA 2.5 | Original ↗ |
 | 225 West 28th StreetOrt · New York | GeneralPunger | CC BY-SA 4.0 | Original ↗ |
 | 22 Fleet StreetOrt · Boston | Tim Sackton from Somerville, MA | CC BY-SA 2.0 | Original ↗ |
 | 22 Lansdowne CrescentOrt · London | No Swan So Fine | CC BY-SA 4.0 | Original ↗ |
 | 22 Lansdowne CrescentOrt · London | Jorge Franganillo | CC BY 2.0 | Original ↗ |
 | 22 Park CircusOrt · Glasgow | James Allan | CC BY-SA 2.0 | Original ↗ |
 | 2345 GrandOrt · Kansas City | Charvex | Public domain | Original ↗ |
 | 235 West Van Buren CondominiumOrt · Chicago | J. Crocker | Attribution | Original ↗ |
 | 239 Central Park WestOrt · New York | Jim.henderson | Public domain | Original ↗ |
 | 23 Cornelia StreetOrt · New York | Freimut Bahlo | CC BY-SA 3.0 | Original ↗ |
 | 23 Heddon StreetOrt · London | Philafrenzy | CC BY-SA 4.0 | Original ↗ |
 | 2–3 Pavilion Buildings, BrightonOrt · Brighton | The Voice of Hassocks | CC0 | Original ↗ |
 | 2400 ChestnutOrt · Philadelphia | Sedona11211990 | CC BY-SA 4.0 | Original ↗ |
 | 2440 Lakeview AvenueOrt · Chicago | Alanscottwalker | CC BY-SA 3.0 | Original ↗ |
 | 2500 North Lakeview CondominiumsOrt · Chicago | Paul R. Burley | CC BY-SA 4.0 | Original ↗ |
 | 250 Pitt Street, Sydney CBDOrt · Sydney | Adam.J.W.C. | CC BY-SA 2.5 | Original ↗ |