Here are my fifty "best".

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  File:12072012 Jefferson Memorial 04.jpg
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  File:101 Philadelphia Cape May HD.JPG
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  File:6th Street historic district Austin, Texas.jpg
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  File:Abbey Greenleaf Library.jpg
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  File:Abo Ruin.jpg
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  Alcatraz prison cell (pfnatic).JPG
  Do not like black bars - scan?
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  File:Alfred Terra Cotta House.jpg
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  File:Arena Cove Historic District-19.jpg
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  File:Boathouse Row Panorama.jpg
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  File:BoneventureCemetry29.jpg
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  File:Brown township bridge pano.jpg
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  File:Burwell house.JPG
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  File:Cannon Row.jpg
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  File:Dealey Mid Morning.jpg
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  File:Federal Realty Building south façade.jpg
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  File:First United Methodist Church in Cheyenne, WY.jpg
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  File:Gingerbread House in Savannah.jpg
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  File:Grand Opera House Meridan MS.jpg
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  File:Hearst Castle Casa Grande September 2012 panorama 2.jpg
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  File:Imperial Garage, Portland, Oregon (2012) - 2.JPG
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  File:Jerusalem Mills Village-Jerusalem Mill HDR, August 2012.jpg
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  File:Kewanee, Illinois - Ryan Round Barn at Johnson Sauk Trail State Recreation Area.JPG
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  File:Lincoln Memorial (8).jpg
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  File:Manhattan Bridge at Night.jpg
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  File:Manhattan Building.jpg
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  File:Monument Sunrise.jpg
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  File:NaPali Coast from Pride of America3.JPG
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  File:Nevada Falls, Yosemite.JPG
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  File:Octagonal Schoolhouse, northern face.JPG
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  File:Palace of Fine Arts MG 6098.jpg
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  File:Pennsylvania State Memorial, Sept 2011.jpg
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  File:Portland Head Lighthouse, Maine.jpg
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  File:SamuelRichHousePenfieldNewYork.JPG
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  File:San Elizario Mission.jpg
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  File:Santa Clara Depot. California railway station 1863.JPG
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  File:Shedd.jpg
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  File:Sibley House complex.JPG
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  File:Smith Opera House.jpg
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  File:St Paul Cathedral 2012.jpg
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  File:St. Matthew's Cathedral and Rectory-15.jpg
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  File:Stone House Manassas VA1.jpg
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  File:The Calorimeter.jpg
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  File:The Samuel Morey Memorial Bridge in Orford, NH.jpg
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  File:Upper Sioux Agency Duplex.jpg
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  File:Vermont State House in Montpelier.jpg
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  File:Wadley Depot.jpg
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  File:Washington County Courthouse 2012.jpg
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  File:Washington Irving Grave.jpg
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  File:Wrigley Building at Night.jpg
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  File:Wukoki Ruin.tif