Plenty to see up the Helford river, up to Gweek boatyard & the Seal Sanctuary.
Further along you've got Porthallow & Porthoustock & the Manacles reef. Inside the reef is Dean quarry & there's a fair bit of controversy about it as plans have been put forward to re-open it as one of the sources of the rock armour for Swansea.
If you're into diving try Porthkerris Divers as they do a lot on the reef & the wreck of the SS Mohegan is on the outer Manacles. http://porthkerris.com/
Past that you've got Coverack & the Paris pub - named for the SS Paris which went ashore in 1899 on Lowland Point. The old lifeboat house is a restaurant & also does good fish & chips. Village website: Coverack Community Website
Harbour dries, so either tender or timing. Bay is sandy bottom so good anchorage & a popular overnight stop for yachts. NOT safe in an easterly.
This webcam worth a look: Hotel in Cornwall on the Lizard Peninsula. The Bay Hotel overlooking the beach at Coverack near Helston and West Penrith, Cornwall.
Further along, after Black Head and before Kennack Sands you have Lankidden Cove beach which is now best approached from seaward as the old route down the cliff is iffy! Best with a small tender so you can anchor off. That's where the trawler Scuderia ended up when the skipper fell asleep on watch - his AIS track showed a dead straight line from Roscoff, France to the beach! 50 yards to the east she'd have just run up on the sandy bottom, but his luck had to run out at some point!
Cadgwith a bit further along - location of 'the Fisherman's Apprentice' - then Lizard lifeboat house & the Lizard.