Details of this spring’s opening of the Transport Museum’s Acton depot have been announced, giving people a chance to go into the overflow site which is only open three a year.

Celebrating London’s transport design heritage, the weekend will also showcase a design-themed programme of talks, tours, interactive displays, and family activities.

From guided tours of the Museum’s poster collection and quirky object handling, to a talk from writer, broadcaster and cartography expert Mark Ovenden on 150 years of London Underground Design.

Highlights include a postcard design workshop inspired by the London Underground logo, heritage bus rides through the Depot’s surrounding area and interactive displays and activities, such as a signalling demonstration area, where visitors can watch the operation of the vintage frames.

Rarely open to the public, the Museum Depot is a treasure trove of the capital’s transport history, housing a range of objects including posters, vehicles, maps, signs and models.

From 2018, the Museum’s Depot Open Weekends will take place three times a year, in spring, summer and autumn.

The Spring opening will take place on 21-22 April 2018.

Tickets cost £12 for adults and £10 for concessions and are valid for one day only. Open from 11:00-17:00. Last admission 16:00. Children and young people aged 17 and under go free (under 16s must be accompanied by an adult).

You can buy on the day, but it’s faster to get in if you book in advance – tickets here