Royal Observatory

sights / Architecture

Royal Observatory information

London , England
Greenwich Park
Getting there
Train: DLR Cutty Sark
More information
adult/child £7/2.50
Opening hours
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Rising south of Queen's House, idyllic Greenwich Park climbs up the hill, affording stunning views of London from the Royal Observatory, which Charles II had built in 1675 to help solve the riddle of longitude.

Success was confirmed in 1884 when Greenwich was designated as the prime meridian of the world, and Greenwich Mean Time (GMT) became the universal measurement of standard time.

In the north of the observatory is lovely Flamsteed House and the Meridian Courtyard (where you can stand with your feet straddling the western and eastern hemispheres); admission is by ticket. The southern half contains the highly informative and free Astronomy Centre and the Peter Harrison Planetarium (adult/child £6.50/4.50).