A few weeks back Steve Chapman and I visited Eastbourne to look at an exhibition about reconstructing faces from skeletons (and some other stuff) all based on archaeological finds in Eastbourne.
Took a photo of what looked like a drilling rig to me, way offshore. Now I know it to be the Royal Sovereign light, located on a shallow shoal some 12 miles offshore. Here it is, further out than the small fishing boat setting out lobster pots and the sailing boat.
Saw a Millennium sundial (described as such, though little evidence it is one) on a shopping street. Nice lump of, as it says, 150m year old Portland stone, and a BST noon line indicating north, but I fail to see how the rest does more than look a bit like a sundial.