King Arthur belongs to no single place. His story was built up by Geoffrey of Monmouth, Thomas Malory and many others, and this route follows it in the legend's own order: Merlin's dragons, Arthur's conception and coronation, his battles and court, the last fight, the sword in the water and Avalon.
Every pin marks a real place that tradition has attached to an episode, not a site proven by history, and each stop says where the link is doubted.
A Cornish knight fetches an Irish princess for his uncle the king, and a love potion on the ship ruins everything. Tristan and Iseult is a medieval legend told in many versions since the 12th century, and every retelling sets it on a slightly different map.
This route follows the lovers from Tristan's drowned homeland to Dublin, Cornwall and Brittany, ending on the island that carries his name. Almost every site is a tradition rather than a fact, so each pin says how sure it is.
King Arthur sets out across Britain in AD 932 to find knights and, in the end, the Holy Grail. When the National Trust withdrew its permission to film at several castles, the Monty Python team had little time to find new locations, so one fortress had to play most of the others.
This route follows the quest in film order through six locations: the castle of the opening shot in Wales, Doune Castle in Scotland standing in for the rest, a moated castle in East Sussex for one establishing shot, a mine, a glen and the island tower that ends the film.
A cursed squire, a spectral hound and a moor that swallows ponies: Conan Doyle's Sherlock Holmes novel, serialised in The Strand Magazine in 1901–02, is set largely on Dartmoor, and several of its places have real counterparts.
The route runs from the grave that may have inspired the legend and the ten-thirty train from Paddington to the convict prison at Princetown, the mire, the tors and the Stapletons' house. Baskerville Hall and Merripit House exist only in the book, so their pins mark a stand-in or nothing at all.
A chance meeting at the Criterion Bar sends an army doctor just back from Afghanistan to a laboratory at St Bartholomew's Hospital, where a stranger grips his hand and observes: "You have been in Afghanistan, I perceive." Within days Dr Watson has moved into 221B Baker Street, the address where many of the stories begin, and off runs the canon: four novels and 56 short stories, all but one set between 1880 and 1914.
This route walks Holmes's London in the order the stories appeared: the Criterion where Watson met Stamford, the hospital of the famous first deduction, the Baker Street rooms that did not exist when Doyle wrote and are now a museum, Scotland Yard's Victorian headquarters on the Embankment, a society church where a bride vanishes, a silent club on Pall Mall, and the Underground station where a body fell from a train roof.
