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jkATL: ROYAL OBSERVATORY GREENWICH, Flamsteed House
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jkATL: ROYAL OBSERVATORY GREENWICH, Flamsteed House
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jkATL: ROYAL OBSERVATORY GREENWICH, Flamsteed House
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jkATL: ROYAL OBSERVATORY GREENWICH
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jkATL: ROYAL OBSERVATORY GREENWICH, Shepherd Gate 24-hour clock
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jkATL: ROYAL OBSERVATORY GREENWICH, Shepherd Gate 24-hour clock
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jkATL: ROYAL OBSERVATORY GREENWICH, Public Standards of Length
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jkATL: ROYAL OBSERVATORY GREENWICH, Flamsteed House, Octagon Room ceiling
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jkATL: ROYAL OBSERVATORY GREENWICH, Flamsteed House, Octagon Room, ancient clock
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jkATL: ROYAL OBSERVATORY GREENWICH
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jkATL: ROYAL OBSERVATORY GREENWICH, Meridian Courtyard with Flamsteed House in background
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jkATL: ROYAL OBSERVATORY GREENWICH, Flamsteed House, Octagon Room
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jkATL: ROYAL OBSERVATORY GREENWICH, Prime Meridian marker line
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jkATL: 2012 OLYMPICS EQUESTRIAN EVENT SITE
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jkATL: ROYAL OBSERVATORY GREENWICH, Prime Meridian Line