 | 3M Administration BuildingOrt · Saint Paul | McGhiever | CC BY-SA 4.0 | Original ↗ |
 | 3 Park AvenueOrt · New York | ButtonwoodTree at en.wikipedia | CC BY-SA 3.0 | Original ↗ |
 | 3rd White Cloth HallOrt · Leeds | Mtaylor848 | CC BY-SA 3.0 | Original ↗ |
 | 3 Times SquareOrt · New York | Terabass | CC BY-SA 3.0 | Original ↗ |
 | 3 VežeOrt · Bratislava | ANDREJ NEUHERZ | CC BY-SA 3.0 | Original ↗ |
 | 400 Lake Shore DriveOrt · Chicago | SidewalkMD | CC BY-SA 4.0 | Original ↗ |
 | 400 Park Avenue SouthOrt · New York | Eden, Janine and Jim from New York City | CC BY 2.0 | Original ↗ |
 | 401 East 74th StreetOrt · New York | Moving Upper East | Public domain | Original ↗ |
 | 404 Name Not FoundOrt · Rom | Pierfelice Licitra | CC BY 3.0 | Original ↗ |
 | 404 Name Not FoundOrt · Rom | Pierfelice Licitra | CC BY 3.0 | Original ↗ |
 | 404 Name Not FoundOrt · Rom | Pierfelice Licitra | CC BY 3.0 | Original ↗ |
 | 404 Name Not FoundOrt · Rom | Pierfelice Licitra | CC BY 3.0 | Original ↗ |
 | 40 Bleecker StreetOrt · New York | Gryffindor | CC BY-SA 3.0 | Original ↗ |
 | 40 East 89thOrt · New York | Jim.henderson | CC0 | Original ↗ |
 | 40 East End Luxury CondominiumsOrt · New York | Superraptor123 | CC BY-SA 4.0 | Original ↗ |
 | 40 Gold StreetOrt · New York | Muhranoff | CC BY-SA 4.0 | Original ↗ |
 | 40 Leadenhall StreetOrt · London | liber | CC BY-SA 2.0 | Original ↗ |
 | 40 Marsh WallOrt · London | Thecanaryfan | CC BY-SA 4.0 | Original ↗ |
 | 411 Building - Gay Street KnoxvilleOrt · Knoxville | Brian Stansberry | CC BY 3.0 | Original ↗ |
 | 414 Light Street ApartmentsOrt · Baltimore | Danielroz | CC BY-SA 4.0 | Original ↗ |
 | 41 Dundonald StreetOrt · Toronto | linux99 | CC BY-SA 3.0 | Original ↗ |
 | 41 ParkOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 41 RuskaOrt · Breslau | Jar.ciurus | CC BY-SA 3.0 pl | Original ↗ |
 | 420 Carroll StreetOrt · New York | uberzombie from Brooklyn, NY | CC BY 2.0 | Original ↗ |
 | 420 Fifth Avenue CondominumOrt · New York | T. Cowart from Durham, NC | CC BY 2.0 | Original ↗ |
 | 425 Market StreetOrt · San Francisco | Coolcaesar | GFDL | Original ↗ |
 | 432 Park Avenue CondominiumsOrt · New York | Epistola8 | CC BY-SA 4.0 | Original ↗ |
 | 443 Queen ApartmentsOrt · Brisbane | Chris Olszewski | CC BY-SA 4.0 | Original ↗ |
 | 448 Greenwich StreetOrt · New York | Gryffindor | CC BY-SA 3.0 | Original ↗ |
 | 44 MonroeOrt · Phoenix | Cygnusloop99 | CC BY-SA 3.0 | Original ↗ |
 | 455 Central Park West CondoOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 456 de la Gauchetiere OuestOrt · Montreal | MTLskyline | CC BY-SA 3.0 | Original ↗ |
 | 45 Broad StreetOrt · Boston | BIipblop | CC BY-SA 4.0 | Original ↗ |
 | 45 Christopher Street CondominiumOrt · New York | Bjeffway | CC0 | Original ↗ |
 | 45 East 66th StreetOrt · New York | Jim.henderson | Public domain | Original ↗ |
 | 45 Fremont StreetOrt · San Francisco | Eric in SF | CC BY-SA 4.0 | Original ↗ |
 | 45 Province CondosOrt · Boston | Nathaniel Hawthorne | Public domain | Original ↗ |
 | 45th Infantry Division MuseumOrt · Oklahoma City | Greg Goebel | CC BY-SA 2.0 | Original ↗ |
 | 45 Wall StreetOrt · New York | unbekannt | CC BY-SA 3.0 | Original ↗ |
 | 461 Dean ApartmentsOrt · New York | GrissJr | CC BY-SA 4.0 | Original ↗ |
 | 46 Hàng CótOrt · Hanoi | Phan Minh Tuấn | CC BY-SA 4.0 | Original ↗ |
 | 46 South EndOrt · London | Jonathan Myall Music | CC BY-SA 3.0 | Original ↗ |
 | 475 Park AvenueOrt · New York | Elisa.rolle | CC BY-SA 4.0 | Original ↗ |
| 485 Park Avenue ApartmentsOrt · New York | Elisa.rolle | CC BY-SA 4.0 | Original ↗ |
 | 49 Belgrave SquareOrt · London | Edwardx | CC BY-SA 3.0 | Original ↗ |
 | 49 ChambersOrt · New York | TLK in 3 | CC BY-SA 3.0 | Original ↗ |
 | 49 Hallam StreetOrt · London | Portlandvillage | CC BY 3.0 | Original ↗ |
 | 4 Bank streetOrt · Glasgow | Lirazelf | CC BY-SA 4.0 | Original ↗ |
| 4 East 89thOrt · New York | Jim.henderson | CC0 | Original ↗ |
 | 4 Handel Street LimitedOrt · London | Thomas Nugent | CC BY-SA 2.0 | Original ↗ |
| 4 Park AvenueOrt · New York | ButtonwoodTree at en.wikipedia | CC BY-SA 3.0 | Original ↗ |
 | 500 Fifth AvenueOrt · New York | Gryffindor | Public domain | Original ↗ |
 | 500mm FeldbahnprojektOrt · Berlin | Matti Blume | CC BY-SA 4.0 | Original ↗ |
 | 505 NashvilleOrt · Nashville | Jacknstock | CC BY-SA 4.0 | Original ↗ |
 | 505 West 19 StreetOrt · New York | Daniel Case | CC BY-SA 3.0 | Original ↗ |
 | 508 West 24th StreetOrt · New York | Tdorante10 | CC BY-SA 4.0 | Original ↗ |
 | 50 east 28th streetOrt · New York | Mtattrain | CC BY-SA 4.0 | Original ↗ |
| 50 Fremont CenterOrt · San Francisco | Eric in SF | CC BY-SA 4.0 | Original ↗ |
 | 50 Hudson YardsOrt · New York | Rhododendrites | CC BY-SA 4.0 | Original ↗ |
 | 50 Scollard YorkvilleOrt · Toronto | Dhodges | CC BY-SA 3.0 | Original ↗ |
 | 50 United Nations PlazaOrt · New York | Elmschrat Coaching38 | CC BY-SA 3.0 | Original ↗ |
 | 50 Water StOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 50 WestOrt · New York | Kidfly182 | CC BY-SA 4.0 | Original ↗ |
 | 50 West 23rd StreetOrt · New York | Beyond My Ken | CC BY-SA 4.0 | Original ↗ |
 | 50 West BroadwayOrt · Boston | IliketrainsR211T | CC BY 4.0 | Original ↗ |
 | 5100 Hyde Park CondominiumOrt · Chicago | unbekannt | Public domain | Original ↗ |
 | 515 Park AvenueOrt · New York | Godsfriendchuck | CC BY-SA 4.0 | Original ↗ |
 | 51 Market StreetOrt · New York | Americasroof | CC BY 3.0 | Original ↗ |
 | 5203 Center BlvdOrt · New York | Kidfly182 | CC BY-SA 4.0 | Original ↗ |
 | 520 Pike TowerOrt · Seattle | Alexrk2 | CC BY 3.0 | Original ↗ |
 | 520 West End AvenueOrt · New York | Jim.henderson | CC0 | Original ↗ |
 | 525 West 52nd StreetOrt · New York | Jim.henderson | CC BY-SA 4.0 | Original ↗ |
 | 525 William Penn PlaceOrt · Pittsburgh | Jmillerpgh | CC BY-SA 3.0 | Original ↗ |
 | 52 Cadogan SquareOrt · London | Paul Leonard | CC BY-SA 2.0 | Original ↗ |
 | 52 CornhillOrt · London | Henryrothery | CC BY-SA 4.0 | Original ↗ |
| 52 East End Avenue CondominiumOrt · New York | Superraptor123 | CC BY-SA 4.0 | Original ↗ |
 | 52 Thomas CondominiumsOrt · New York | Marcin Wichary from San Francisco, U.S.A | CC BY 2.0 | Original ↗ |
 | 53rd Street TunnelOrt · New York | Metropolitan Transportation Authority of the State of New … | CC BY 2.0 | Original ↗ |
 | 540 West 28th Street CondominiumOrt · New York | Godsfriendchuck | CC BY-SA 4.0 | Original ↗ |
 | 545 Lake Shore Boulevard WestOrt · Toronto | SimonP | CC BY-SA 3.0 | Original ↗ |
 | 550 MadisonOrt · New York | David Shankbone | CC BY 2.5 | Original ↗ |
 | 555 City CenterOrt · Oakland | Coolcaesar | CC BY-SA 3.0 | Original ↗ |
 | 555 Market StreetOrt · San Francisco | Minesweeper | CC BY-SA 3.0 | Original ↗ |
 | 555 Massachusetts Avenue CondoOrt · Washington | AgnosticPreachersKid | CC BY-SA 3.0 | Original ↗ |
| 555 West End CondominiumsOrt · New York | Jim.henderson | CC0 | Original ↗ |
 | 55 Alexander stOrt · Vancouver | Xiao23 | CC BY-SA 3.0 | Original ↗ |
 | 55 Broad StreetOrt · New York | Dipsey | Public domain | Original ↗ |
 | 55 Central Park WestOrt · New York | David Shankbone | CC BY-SA 3.0 | Original ↗ |
 | 55 Courtfield GardenOrt · London | Daniel Case | CC BY-SA 3.0 | Original ↗ |
 | 55 East 86th Street CondominiumOrt · New York | Peter Baab | Public domain | Original ↗ |
 | 55 East ErieOrt · Chicago | TonyTheTiger (t/c/bio/WP:CHICAGO/WP:LOTM) | CC BY-SA 3.0 | Original ↗ |
 | 55 Public SquareOrt · Cleveland | EurekaLott | CC BY-SA 3.0 | Original ↗ |
 | 560 Lexington AvenueOrt · New York | Fletcher6 | CC BY-SA 3.0 | Original ↗ |
 | 560 Mission StreetOrt · San Francisco | Dead.rabbit | CC BY-SA 4.0 | Original ↗ |
 | 56 Allee de la RobertsauOrt · Straßburg | Jerome SXB | CC BY 2.0 | Original ↗ |
 | 56 Artillery LaneOrt · London | Joseph2302 | CC0 | Original ↗ |
 | 56 LeonardOrt · New York | Paul Hermans | CC BY-SA 4.0 | Original ↗ |
| 570 Lexington AveOrt · New York | Fletcher6 | CC BY-SA 3.0 | Original ↗ |
 | 575 Wandsworth RoadOrt · London | JRennocks | CC BY-SA 4.0 | Original ↗ |
 | 57 Tradescant RoadOrt · London | Chris Whippet | CC BY-SA 2.0 | Original ↗ |