I could not enter it, as I had not the key of the door leading to it from the house, but I have taken with my kodak views of it from various points.
These type of details can appear as surprising at first because the Dracula book is set in the late victorian era, giving the expected feeling that everything must be ancient compared to our modern times...
Yet, this is Jonathan's kodak camera:
Once we the readers grab all of these details (starting with this one), and put them all together, it gives the picture of the whole novel being rather futuristic. Considering how one of the elements of the gothic genre is how the past collides with the changes of the present, it's very fitting that Jonathan talks about the ancient english building that the Count wants to move in... With the help of a modern camera.