John O' Groats
At the complete opposite end of Great Britain from Land's End in the South is John O' Groats, almost the northern most point of the landmass (the true northern most tip is nearby Dunnet Head).
I loved the understated nature of John O' Groats, completely the opposite from Land's End's over-commercialised hell. There is free parking, good and reasonably priced accommodation (including a very good camping ground), craft shops selling homemade candles and pottery and knitwear, and a shop selling groceries. Oh, and there is also one of those signposts that tell you how far away your hometown is, but you have to pay to get your photo taken next to it. There is also the Last House In Scotland shop and museum, where you can buy your tacky bits and pieces.
However, wildlife ferries also operate everyday from June 20th until August 31st. The 90 minute trips start at 2:30pm, and take you around some of the rugged cliffs to see Arctic Skuas, Puffins, Storm Petrels, and Grey Seals.
A worthwhile walkway leads around the coast, 6kms return. This takes you away from the crowds to Duncansby Lighthouse and some massive rock formations called Duncansby Stacks.