The Holly-Trinity Cathedral in Kharkov, as it is now, was built in 1861. But on its place there was a church (1764) and then a cathedral that was rebuilt later. This Cathedral was one of the richest cathedral in Kharkiv.
At my visit to the Cathedral I found it a bit dark and very quiet. I didn’t meet any priest there and only a few people.
Here is a photo of the Holly-Trinity Cathedral from the street:
And this is the HDR image of the Holly-Trinity Cathedral interior. The image was merged using 2 hand-held photos using ISO 1600 as the Cathedral is very dark inside.