Ever wanted to take a gander at the inside of Croydon’s town hall or see the workings of the world’s largest pop-up saffron farm?

This weekend is your chance.

The 24th Open House London event will open up 13 Croydon landmarks – also including the Shirley Windmill, the Croydon clocktower and and the Grade I-listed Whitgift Almshouses – available for the public to see during this year’s event.

The event will see 750 of London’s best buildings open their doors, including old favourites like the Gherkin, the Shard, the Foreign and Commonwealth Office and 10 Downing Street.

There are 140 new buildings in this year’s programme, including Anish Kapoor’s Orbit Tower in Queen Elizabeth Olympic Park; Here East, a new technology hub and business campus in Hackney Wick; and the house Cheesegrater architect Richard Rogers designed for his parents in Wimbledon.

Roy Olcayto, director of Open House, said: “From a Battle of Britain Bunker to the Argentine Ambassador’s residence, Open House weekend gives Londoners the chance to explore the city’s great buildings and places that are usually off-limits.

“Whether its super-contemporary private homes, iconic skyscrapers or hidden gems like the Crystal Palace subway, very little is off-limits during the two days.

“An open city, where citizens are free to roam where they like, is the ultimate goal.

“It’s worth remembering that the freedoms we enjoy today, like strolling through Hyde Park – once off-limits to masses – had to be fought for.”

For more information and to book spaces for The Shard and Downing Street visit openhouselondon.org.uk.