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The Observatory Science Centre is in East Sussex, within the Herstmonceux Castle Estate. This is 2 miles east of the village of Herstmonceux on the Boreham Street to Pevensey Road, near Wartling.

Look for brown directional tourist signs to 'Herstmonceux Castle and Science Centre'.

As you approach the area if you can see the green, copper clad domes - or the grey, steel Isaac Newton Dome, then you are almost here!

From the north:The most direct route is to continue south on the A22 to the Cophall Roundabout at Polegate, just north of Eastbourne and then to proceed as below (from the west).

From the west:
Travel along the A27 to Polegate, then at the Cophall Roundabout follow the A22 / A27 eastbound to Pevensey. At the Pevensey Roundabout, take the 1st exit on the left and follow the sign for Herstmonceux Castle, 3 miles along the Wartling Road.

From the east:
Travel along the A259 to the Pevensey Roundabout. Take the 4th exit and follow the sign for Herstmonceux Castle, 3 miles along the Wartling Road.