This is the Botanic Museum at the Lund University Botanic Gardens in Lund, Sweden:

Or at least, the above is a view of the museum through a 665 nm infrared filter (with a red / blue color channel swap and other tweaking).

Using less processing on the same photograph results in a view that’s (to my eye at least) a bit more sinister in appearance:

In regular visible light, it looks more like this:

One of the nice things about photographing in infrared is that it works well in bright mid-day sunlight (which tends to be less flattering for other uses). The flip side of this coin is that when you’re visiting places like Scandinavia, you may not get bright mid-day sunlight all that often.