Was in the neighbourhood and visited Herstmonceux Castle and the Observatory Science Centre (the site of the former Royal Observatory at Herstmonceux).

Built originally as a country home in the 15th century, the moated red-brick Castle is most impressive. As is the avenue of sweet chestnut trees that date from the 1700’s, the walls of the Elizabethan walled garden, and a number of sundials in the formal gardens.

In 1946 the Admiralty bought the estate for the Royal Greenwich Observatory, and it became an important scientific institution for the next 40 years (until 1993 when it was acquired by Queen’s University of Canada, and is now an International Study Centre attracting students from around the world).

The Observatory Science Centre occupies the buildings that were the site of The Royal Observatory. The tour of some of the domes and telescopes highlighted how it was a world leading astronomical site for many years, though nowadays it is at the forefront of making science accessible with an excellent range of hands-on exhibits, activities and science shows. While children need to be accompanied by adults, thankfully as an adult I was able to play with the exhibits quite happily unaccompanied (it looked like all adults, parents and grandparents were having a great time too).

Tregothnan garden is situated at the head of the Fal Estuary and has been the home of the Boscawen family since the 1300s. It has a wonderful collection of plants including original introductions brought back from by plant hunters including William and Robert Lobb, and plants from expeditions to China and South America.

More than 100 years ago the Boscawens introduced rhododendrons, rare trees and the earliest outdoor plantings of camellias in the country. A specimen of Trachycarpus fortunei is reputed to be the tallest in the country, and they have probably the best Cork Oak (Quercus suber) specimen I have seen in the UK.

The Tregothnan estate continues to be at the forefront of plant introductions, particularly with growing its own tea – though that was not accessible on this rare open day.

More photos from Tregothnan, this trip and the trip to Cornwall last month can be found here.

I had such a good time visiting last month, I was really pleased to be back again now. I had only ever spent time down ‘in the pit’ but I was curious about the wider estate. Having a look at Google Maps and Microsoft Live Search Map gave a real insight into the evolution of the site.