Charles Babbage's house

 was a house in London, where Charles Babbage lived in 1834.

After the Thirteenth Doctor, Charles Babbage and Ada Gordon escaped from the Royal Adelaide Gallery, where they had encountered the Master, they went to Babbage's house. The Doctor was excited to see Babbage's difference engine. Charles Babbage also showed her the "Silver Lady", which turned out to be a figurine identical to the one in Daniel Barton's office. The Doctor used her sonic screwdriver on the "Silver Lady" to summon a Kasaavin so that it would bring her back to the 21st century. Before the Doctor touched the Kasaavin, Ada grabbed her hand, and they both were brought to Paris in 1943. (TV: Spyfall)