The phrase 'historically interesting' is correct and can be used in written English.
It can be used to describe something that is interesting because of its historical significance. For example, "The ancient temple is historically interesting given the long history of its construction."
The book itself is historically interesting, though.
All this is historically interesting but not very dramatically involving.
The money of Gustav II Adolf (1611 32) is historically interesting.
There are several historically interesting houses built by patrician Venetian families.
There are many historically interesting towns and castles in the highlands.
What's proposed amounts to vandalism of the beautiful and historically interesting interior of a listed building.
Rhys has historically devised interesting ways to work solo – such as sampling his voice – but on this occasion we'll be witnessing the fruits of his "investigative concert tour" of America, during which he researched his ancestor John Evans, who left Wales for Baltimore in search of a Welsh-speaking Native American tribe.
This may have something to do with the long journey from Dalaman airport, a two-and-a-half-hour drive away, or the fact that Kalkan, along Turkey's Turquoise coast and in one of the historically most interesting regions I've ever visited, might be considered more of a base than a destination.
Frege formalized his system more explicitly, but his system was not precisely a set theory in the modern sense: the most that can be said is that his system is inconsistent, for basically the reason given here, and a full account of the differences between Frege's system and our "naive set theory" is beside the point (though historically certainly interesting).
Some of the material from this period is more interesting historically than aesthetically, a common occurrence in historical shows, and the section on recent "art" photography is vastly uneven, as contemporary surveys so often are.
WHAT is interesting historically about a Tigers-Giants World Series?
