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.
HBO's Game of Thrones prequel was filmed primarily in the United Kingdom, and its Velaryon world is Cornish: the island seat of Driftmark is a tidal island, and the Stepstones war camp is a cove on the Lizard peninsula. For the capital and the free city of Pentos, the crew went to western and southern Spain.
The route follows the story from the Stepstones war (season 1, episode 3) through the Driftmark episodes to King's Landing in season 2. Sources do not name the exact streets used in Cáceres, so that pin marks the old town.
Lin Zexu's crackdown on the opium trade in Canton in 1839 set off a war that ended three years later with a treaty signed on a British warship in the Yangtze. The route follows it from the Pearl River to Nanjing.
Seven stops cover the confiscation, the destruction of the opium at Humen, the clashes at Chuenpi and Dinghai, the raising of the flag at Hong Kong, the fall of Zhenjiang and the treaty talks at Jinghai Temple. Several places have changed beyond recognition, which the notes mark.
In the summer of 1588 a Spanish fleet appeared off Cornwall with a plan to join Parma's army. Beacons carried the news to London, the English fleet came out of Plymouth, and within weeks fireships, a day of heavy gunnery and autumn storms had ended the plan.
The route follows the campaign through seven places, from the first sighting to a beach in County Sligo where three ships broke up. Most of the fighting was at sea, so the pins mark the nearest coast landmark, and the story of Drake and his game of bowls at Plymouth is labelled as legend.
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.
