 | University SquareOrt · Bukarest | Aleksandr Osipov from Ukraine | CC BY-SA 2.0 | Original ↗ |
 | University Station Senior ApartmentsOrt · Denver | Mobyll at en.wikipedia | Public domain | Original ↗ |
 | University TowersOrt · New York | Jim.henderson | CC BY-SA 4.0 | Original ↗ |
 | University VillageOrt · New York | how_long_it_takes | CC BY 2.0 | Original ↗ |
 | UniversumOrt · Mexiko-Stadt | AlejandroLinaresGarcia | CC BY-SA 3.0 | Original ↗ |
 | Universum BremenOrt · Bremen | User:Matthias Süßen | CC BY-SA 3.0 | Original ↗ |
 | Unley MuseumOrt · Adelaide | User:Orderinchaos | CC BY-SA 3.0 | Original ↗ |
 | Unser Racing MuseumOrt · Albuquerque | John Phelan | CC BY-SA 4.0 | Original ↗ |
 | Unteres BelvedereOrt · Wien | Maclemo | CC BY-SA 3.0 | Original ↗ |
 | Untergiesing-HarlachingOrt · München | Bjs | CC BY-SA 3.0 | Original ↗ |
 | Unterrichtsanstalt des Kunstgewerbemuseums BerlinOrt · Berlin | Manfred Brückels | CC BY-SA 3.0 | Original ↗ |
 | Untitled At The Denver Art MuseumOrt · Denver | Archipreneur | CC BY-SA 3.0 | Original ↗ |
| Untitled At The Denver Art MuseumOrt · Denver | Archipreneur | CC BY-SA 3.0 | Original ↗ |
 | Unzeitgemäße ZeitgenossenOrt · Leipzig | Timur Y | CC BY 3.0 | Original ↗ |
| Unzeitgemäße ZeitgenossenOrt · Leipzig | Timur Y | CC BY 3.0 | Original ↗ |
 | Uomo della Pioggia - FolonOrt · Florenz | Sailko | CC BY 2.5 | Original ↗ |
 | Uppakra Arkeologiska CenterOrt · Malmö | Bengt Oberger | CC BY-SA 4.0 | Original ↗ |
 | Upper Belgrave Street Belgravia LondonOrt · London | CVB | CC BY 4.0 | Original ↗ |
 | Upper Eastside BerlinOrt · Berlin | Sir James | CC BY 3.0 | Original ↗ |
 | Upper House at SwanstonOrt · Melbourne | ArchMatthewLiu | CC BY-SA 4.0 | Original ↗ |
 | Upper Pontalba BuildingOrt · New Orleans | unbekannt | CC BY-SA 3.0 | Original ↗ |
 | Upper WestOrt · Berlin | Marek Śliwecki | CC BY-SA 4.0 | Original ↗ |
 | Upper West SideOrt · Melbourne | -wuppertaler | CC BY 4.0 | Original ↗ |
 | Upplands runinskrifter 208Ort · Stockholm | Talnat | CC BY-SA 4.0 | Original ↗ |
 | Upplands runinskrifter 53Ort · Stockholm | Albertyanks - Albert Jankowski | Public domain | Original ↗ |
 | Upplev VaxholmOrt · Stockholm | I99pema | CC BY-SA 4.0 | Original ↗ |
 | UppståndelsekapelletOrt · Stockholm | Arild Vågen | CC BY-SA 3.0 | Original ↗ |
 | UpshireOrt · London | Acabashi | CC BY-SA 4.0 | Original ↗ |
 | UP-siteOrt · Brüssel | Martin Cammarata | CC BY-SA 4.0 | Original ↗ |
 | Upstairs Lounge MemorialOrt · New Orleans | Deisenbe | CC BY-SA 4.0 | Original ↗ |
 | Up:TownOrt · Rotterdam | Choinowski | CC BY-SA 4.0 | Original ↗ |
 | UQ Anthropology MuseumOrt · Brisbane | Chris Olszewski | CC BY-SA 4.0 | Original ↗ |
 | Uranienborg Terrasse 9Ort · Oslo | Jan-Tore Egge | CC BY-SA 3.0 | Original ↗ |
 | Urban Glass HouseOrt · New York | Bangabandhu | CC BY-SA 4.0 | Original ↗ |
 | Urbanización Cabo CerveraOrt · Torrevieja | Nioger | CC BY 3.0 | Original ↗ |
 | Urban Lights - Los Angeles, CaliforniaOrt · Los Angeles | Chris Brignola cjbrignola | CC0 | Original ↗ |
 | Urban NationOrt · Berlin | Fridolin freudenfett | CC BY-SA 4.0 | Original ↗ |
 | Urban View Grand TowerOrt · Hiroshima | Taisyo | CC BY-SA 3.0 | Original ↗ |
 | Urb. Gran MarbellaOrt · Marbella | Zarateman | CC0 | Original ↗ |
 | Ursuline AcademyOrt · San Antonio | Arthur W. Stewart | Public domain | Original ↗ |
 | UrsulinenplatzOrt · Salzburg | Snotty (talk) | CC BY 3.0 | Original ↗ |
 | UrsulinskaOrt · Bratislava | Palickap | CC BY-SA 4.0 | Original ↗ |
 | Urxova6Ort · Prag | cs:ŠJů | CC BY-SA 3.0 | Original ↗ |
 | US Army Military Ocean TerminalOrt · New York | Dennis from Нью-Йорк, Россия | CC BY-SA 2.0 | Original ↗ |
 | US Army Museum-Fort DerussyOrt · Honolulu | Joel Bradshaw | Public domain | Original ↗ |
 | U.S. Bank PlazaOrt · Minneapolis | AlexiusHoratius | CC BY-SA 3.0 | Original ↗ |
 | Usbl Grefsenveien 51Ort · Oslo | Wilhelm Råger / Oslo Museum | CC BY-SA 4.0 | Original ↗ |
 | USC Fisher Museum of ArtOrt · Los Angeles | staff member at Fisher Museum of Art | CC0 | Original ↗ |
 | USCGC Taney WHEC-37Ort · Baltimore | Joe Ravi | CC BY-SA 3.0 | Original ↗ |
| USCGC Taney WHEC-37Ort · Baltimore | Joe Ravi | CC BY-SA 3.0 | Original ↗ |
 | USCG Lightship ChesapeakeOrt · Baltimore | Elisa.rolle | CC BY-SA 3.0 | Original ↗ |
 | US Coast Guard Base SeattleOrt · Seattle | Joe Mabel | CC BY-SA 3.0 | Original ↗ |
 | US Coast Guard Station HangerOrt · Miami | Ebyabe | CC BY-SA 3.0 | Original ↗ |
 | USC Pacific Asia MuseumOrt · Pasadena | Minnaert | CC BY-SA 3.0 | Original ↗ |
 | U.S. Department of the Interior MuseumOrt · Washington | MBisanz talk | CC BY-SA 3.0 | Original ↗ |
 | Usedlost HercovkaOrt · Prag | JiriMatejicek | CC BY-SA 3.0 | Original ↗ |
 | Usedlost TurbovaOrt · Prag | VitVit | CC BY-SA 4.0 | Original ↗ |
 | US Lightship LV-87 (Ambrose)Ort · New York | Joe Mabel (on Flickr as Joe Mabel from Seattle, US) | CC BY-SA 3.0 | Original ↗ |
 | US Marine HospitalOrt · Louisville | Censusdata at en.wikipedia | Public domain | Original ↗ |
 | U.s. Mint At DenverOrt · Denver | Larry D. Moore | CC BY 4.0 | Original ↗ |
 | U.S. Naval Undersea MuseumOrt · Seattle | Steven Pavlov (LovingWA) | CC BY-SA 3.0 | Original ↗ |
 | U.S. NavyOrt · Washington | unbekannt | CC BY-SA 3.0 | Original ↗ |
| Us Navy Memorial PlazaOrt · Washington | unbekannt | CC BY-SA 3.0 | Original ↗ |
 | U.S. Olympic & Paralympic MuseumOrt · Colorado Springs | Visitcos | CC BY-SA 4.0 | Original ↗ |
 | U.S. Route 1 in Rhode IslandOrt · Providence | Rai•me | CC BY-SA 3.0 | Original ↗ |
 | U.S. Route 6 in Rhode IslandOrt · Providence | SPUI | Public domain | Original ↗ |
 | USS ALABAMA Battleship Memorial ParkOrt · Mobile | Rennett Stowe from USA | CC BY 2.0 | Original ↗ |
 | U.S.S. Arizona Memorial - University of ArizonaOrt · Tucson | Zereshk | CC BY-SA 3.0 | Original ↗ |
 | USS BarryOrt · Washington | Unknown author Unknown author | Public domain | Original ↗ |
 | USS Blueback SubmarineOrt · Portland | Decumanus | CC BY-SA 3.0 | Original ↗ |
 | USS Cassin YoungOrt · Boston | ROxBo at English Wikipedia | Public domain | Original ↗ |
 | USS CharretteOrt · Athen | U.S. Navy | Public domain | Original ↗ |
 | USS Chicago AnchorOrt · Chicago | U.S. Navy | Public domain | Original ↗ |
 | USS Cod Submarine MemorialOrt · Cleveland | Michael Barera | CC BY-SA 4.0 | Original ↗ |
 | USS ConstellationOrt · Baltimore | 350z33 at en.wikipedia | CC BY-SA 3.0 | Original ↗ |
 | USS ConstitutionOrt · Boston | (U.S. Navy photo by Seaman Matthew R. Fairchild/Released) … | Public domain | Original ↗ |
 | USS DolphinOrt · San Diego | unbekannt | Public domain | Original ↗ |
 | USS InauguralOrt · St. Louis | w:en:Kevin Saff | Public domain | Original ↗ |
 | USS IntrepidOrt · New York | Unknown authorUnknown author | Public domain | Original ↗ |
 | USS Lexington MuseumOrt · Corpus Christi | USN | Public domain | Original ↗ |
 | USS Marlin (SST-2)Ort · Omaha | U.S. Navy photograph | Public domain | Original ↗ |
 | USS Midway MuseumOrt · San Diego | Unknown authorUnknown author | Public domain | Original ↗ |
 | USS Orleck Naval MuseumOrt · Jacksonville | U.S. Navy | Public domain | Original ↗ |
 | U.S. Space & Rocket CenterOrt · Huntsville | formulanone from Huntsville, United States | CC BY-SA 2.0 | Original ↗ |
 | USS Pampanito Museum and MemorialOrt · San Francisco | Sanfranman59 | CC BY-SA 3.0 | Original ↗ |
 | USS RECRUITOrt · San Diego | Gedstrom | CC BY 3.0 | Original ↗ |
 | USS RequinOrt · Pittsburgh | malo | Public domain | Original ↗ |
 | USS SanctuaryOrt · Baltimore | Richard Miller BMCS, USNR | Public domain | Original ↗ |
 | U.s. Steel TowerOrt · Pittsburgh | Cbaile19 | Public domain | Original ↗ |
| US Steel TowerOrt · Pittsburgh | Cbaile19 | Public domain | Original ↗ |
 | USS TorskOrt · Baltimore | Mhugg | CC BY-SA 3.0 | Original ↗ |
 | Uss Wisconsin Bb-64Ort · Norfolk | Unknown authorUnknown author | Public domain | Original ↗ |
 | Utah Commercial and Savings Bank BuildingOrt · Salt Lake City | Tamanoeconomico | CC BY-SA 4.0 | Original ↗ |
 | Utah Law Enforcement MemorialOrt · Salt Lake City | Another Believer | CC BY-SA 4.0 | Original ↗ |
 | Utah Museum of Contemporary ArtOrt · Salt Lake City | Utah Museum of Contemporary Art | CC BY-SA 3.0 | Original ↗ |
 | Utah Museum of Fine ArtsOrt · Salt Lake City | Tricia Simpson | CC BY-SA 3.0 | Original ↗ |
 | Utsa Institute Of Texan CulturesOrt · San Antonio | Larry D. Moore | CC BY 4.0 | Original ↗ |
 | Utsiktstornet i SlottsskogenOrt · Göteborg | Jakob Sellberg | CC BY-SA 3.0 | Original ↗ |
 | UT TowerOrt · Austin | United Press International | Public domain | Original ↗ |
 | Uudenmaankatu 33Ort · Helsinki | jampe | CC BY-SA 3.0 | Original ↗ |