New Scientist - I used to read it religiously and you get the right balance of detail and digestibility, at least for me. Others could find it to be a bit too much.
BBC Science Focus - not read it much but it’s a lighter read than New Scientist without dumbing it down.
Fortran Times - covers science and archaeology developments as well as odd news and out-there weirdness often with tongue firmly in cheek.
History Today - one of the leading history magazines
BBC History - another accessible history mag from the Beeb. They produce a few others that could be of interest: Countryfile, Sky St Night, Wildlife and Music.
Prospect magazine - not read it but it’s a popular general-interest magazine that doesn’t dumb things down.
The Idler - it may be of interest but it’s come and gone a few times since I last read it.
Best bet might be sampling a few and see what tickles your fancy.