On May 14, 1951, the Talyllyn Railway became the first line in the world to be preserved as a heritage railway by volunteers. Trains doubtless run closer to schedule than any other railway in the UK.

On May 13, 1638, construction began on Delhi's Red Fort. After completion 10 years later the fort served as the residence of the Mughal emperors for a couple of centuries. These days the main residents are a flock of green…

On May 12, 1820, Florence Nightingale was born in the Italian city which she was named after. Known as 'the lady with the lamp' for her night-time nursing rounds during the Crimean War, there are several statues in her honour,…

On or around May 9, 1092, Lincoln Cathedral was consecrated (dates from almost a millennium ago are a bit vague). After spending 4 years overseeing its construction, Bishop Remigius died two days before the consecration. It suffered through fires and…

On May 8, 1902, Martinique's Mount Pelée erupted. The lava flow from the volcano completely destroyed the town of St. Pierre, killing almost all of its 30,000 inhabitants.

In the early days of online mapping, sensitive locations were often censored for security reasons. Examples include military installations, government buildings, royal residences, prisons, power plants and more. However in many cases blurring happened on one service but not another.…