St Petersburg

St Petersburg, also known as Petrograd, was a city in Russia.

The Second Doctor, Jamie McCrimmon, Ben Jackson and Polly Wright attempted to visit the Winter Palace in St Petersburg in 1782, but they materialised in the vicinity of Stalingrad in 1942 instead. (AUDIO: The Night Witches)

Sir Hamilton Seymour, the British ambassador to the Russian Empire during the Crimean War (1853-1856), was stationed in St Petersburg in 1854. (AUDIO: The Angel of Scutari)

In 1903, the First Doctor, Susan Foreman, Ian Chesterton and Barbara Wright left the unconscious Grigori Rasputin in the Summer Garden in St Petersburg. (AUDIO: The Wanderer)

In 1904, the Fifth Doctor, Tegan Jovanka and Turlough visited St Petersburg. Due to a teleportation accident, Tegan and Turlough were transported to Vladivostok, where they were forced to take a train back to St Petersburg. (PROSE: Gudok)

The Eighth Doctor claimed he took a train with Vladimir Lenin from Switzerland to Petrograd. (AUDIO: Storm Warning)

Behind the scenes
In real world, St Petersburg has also been known as Leningrad. However, no connection between the two names has been established in Doctor Who universe.