Oops! The next one is Timeless.
Lots of shows have done time travel before, but what I liked about this US show was the social history / civil rights themes.
The time travelling team is comprised of a white woman, a black guy and a white man.
They go back in time [because reasons] to significant places/events like the Hindenburg disaster, Bonnie and Clyde, work on the space programme in the Hidden Figures era, going back to civil war US.
It was quite well done, I felt like I learned a lot, I Googled a lot about the actual events irl and it was fairly accurate in terms of how they were portrayed overall (except for this time travelling team finding themselves at these significant points in history narrative, obvs).
But what was particularly nicely done was how modern day characters went back in time and there was this juxtaposition of how a white woman and black man would've been treated differently back in those days, so it was quite thought-provoking and made the points relatively subtly, by observation, rather than standing on a soap box about them.
I didn't really like history lessons at school, but it made me kind of wish I'd had a history teacher who got the class watch an episode then do some research as to what bits were historically accurate (which I'd been doing, Googling along), then think about the attitudes of society towards black people or women. History's usually told from the perspective of the victor, from the point of view of the main white male, so it was good, thought-provoking, how they incorporated and explored those checks and balances, it doesn't just tell those stories in a one-dimensional text book way.
But it wasn't dull or lecturey about it, it was entertaining sci-fi too.