Flamsteed House at the Royal Observatory Greenwich at night

Flamsteed House and astronomers' apartments

Free entry for MembersBuy ticketsEntrance charges apply to Flamsteed House and the Meridian Courtyard (ages 5 and under go free). An adult day ticket costs £7 (£5.50 concessions). Save money with a Combo Ticket (combined Royal Observatory and Cutty Sark admission) or an Astro Ticket (Royal Observatory + Planetarium). See times and admissions for details.

See also floor plans.

Flamsteed HouseFlamsteed House

Flamsteed House

Flamsteed House is the original Observatory building at Greenwich, designed by Sir Christopher Wren in 1675 on the instructions of King Charles II.

The Observatory was built on the site of Greenwich Castle, which originally belonged to Humphrey, Duke of Gloucester (brother of Henry V) and was often used as a guest house and hunting lodge by Henry VIII.

Time galleries

Flamsteed House now houses two of the modern Time galleries, Time and Longitude and Time and Greenwich

Astronomers Royal's apartments

Take a fascinating glimpse into the apartments where the Astronomers Royal and their families lived and worked.

The role of Astronomer Royal was created by Charles II in 1675, when he appointed John Flamsteed to draw up a map of the heavens with enough accuracy to be reliable for navigation. Since Flamsteed there have been 14 Astronomers Royal, including Edmond Halley and Nevil Maskelyne, each of whom have contributed to the world’s understanding of the stars, time and space.

See portraits of the Astronomers Royal

Octagon Room

Octagon RoomInside the Octagon Room, Flamsteed's HouseThe beautiful Octagon Room was designed to observe celestial events including eclipses, comets and planetary movements. However, the positioning of Flamsteed House meant that the original purpose of the Observatory could not be fulfilled from the Octagon Room. With big windows, the room was perfect for watching the sky, but not ideal for positional observations, because none of the walls were aligned with a meridian. Most important positional observations were actually made in a small 'shed' in the Observatory gardens, though King Charles II remained blissfully unaware of this.

The Octagon Room is open to the public and now houses a selection of timepieces and astronomical instruments.

The Time Ball

On top of Flamsteed House is one of the world's earliest public time signals, the bright red Time Ball.

Venue hire

Flamsteed House and the Octagon Room can be hired for corporate evening events.

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