Sizergh Castle has extensive gardens within a larger estate. When I was there at the end of March, winter still had the UK in its grip, and there were only the first signs of spring, with the small Lakeland daffodils coming into bloom. In a few weeks, once the weather warms up a bit, I imagine the grounds will be much more colourful as spring bulbs start to flower and trees burst into blossom.
At the side of the house there's an interesting limestone rock garden, which had some early narcissus and winter flowering heathers bringing a little colour. Later, it will be much brighter, as there are some acer trees, over 100 years old, that will have gorgeous russet leaves.