Strangely, the rest of the country isn't greatly aware of Sussex. Or they think Brighton (aka London-on-Sea) is Sussex, and that the county has nothing else to show. It is true that coastal Sussex is largely a string of built-up beach resorts, one or two of them smart, many of them dull, and none of them rivalling the picturesque resorts of Devon and Cornwall and elsewhere. But they are all different from Brighton. And all share the same gorgeous sunsets, for all the Sussex coastline faces the English Channel.
'Sussex by the sea' is rather a cliché, but nevertheless the county is sea-orientated, and looks south, and does not look northwards to London. Thousands commute daily to the capital, of course; but, if not of working age, it's very easy to forget that London exists. The Big City's pull is weak compared to that felt by the poor souls who live in Surrey and Kent. And what happens in London has no bearing on what happens in Sussex. Sussex goes its own way. And Sussex won't be druv, as the saying goes.
I love the Sussex coast. I also love the Sussex countryside, and there is an astonishing amount of it to enjoy. However, I would be the first to admit that Sussex doesn't have everything. It has the South Downs, but no mountains. It has the sea, but no large natural lakes. It is very well wooded in parts, but there is no proper forest, like Hampshire has the New Forest.
And it has no proper moorland. The nearest equivalent is an upland area in the centre of the county called Ashdown Forest. It's pretty small - say six miles by six miles. It's undulating heathland: ferns, bracken, little woods, lots of gorse, and some sandy or muddy tracks. There's enough space to avoid meeting another person, but other people are never totally out of sight. There are certainly wild animals and birds, and there may be cattle and other larger animals too, although I never seem to see any wandering around, like you might commonly see ponies and cows in the New Forest, or on Dartmoor, although at night deer abound and may cross the road as you drive along - and need watching out for.
All this said, it's a pleasant place for a rough ramble, although one might cover most of Ashdown Forest in a few hours' walking. There are very few 'tourist sights', and none of them are truly compelling. There's a nice windmill - a rare post-mill, I think - near Nutley: