The Gherkin

30 St Mary Axe, often simply referred to as the Gherkin, was a building in London. (PROSE: The Time Travellers' Almanac)

Construction work on the tower was completed in 2004, including the fitting of over 24000 square metres of glass. It was 40-storeys high and stood at a height of 180 metres. When it was built, it was considered one of the tallest buildings in London, and had a 360-degree view over the city. (PROSE: The Time Travellers' Almanac)

On 25 December 2006, the glass windows of the Gherkin were shattered by a shockwave caused by the Sycorax ship entering the atmosphere. (TV: The Christmas Invasion)

The Tenth Doctor once encountered the Slitheen on top of the Gherkin and lost his sonic screwdriver. (COMIC: Hear No Evil)

When the Twelfth Doctor and Clara Oswald arrived in London during the Hyperion invasion of 2015, the Doctor proved to Clara that they were in her own time by pointing out the Gherkin and the Shard. (COMIC: The Hyperion Empire)

Alternate timelines
In an alternate timeline, trains passed through the Gherkin. (TV: The Wedding of River Song)