And as for the house being interesting, an architectural chef-d'oeuvre, it could not be otherwise.

7 seconds sound clip from the The Black Cat (1934) movie soundboard.

You can hear this line at 00:17:08.756 in the Blu-ray version of the movie.

Quote context

[...]

- Sorry if I'm intruding.

- Not at all. Do come in, we were just going to have something to drink. Now perhaps you will join us? And what would you like?

- Oh, uh, whiskey.

- Whiskey.

- This is a very interesting house you have here. Has an atmosphere, kind of, uh...

- It is indeed hard to describe. As hard to describe as life or, or death. It may well be an atmosphere of death.

- This place was built on the ruins of that same Fort Marmorus that our unfortunate friend, the driver, described so vividly.

- Herr Poelzig commanded Marmorus during the last years of the war.

- He is perhaps sentimental about this spot.

- And as for the house being interesting, an architectural chef-d'oeuvre, it could not be otherwise.

- Engineer Poelzig is one of Austria's greatest architects.

- Dr. Werdegast is one of Hungary's greatest psychiatrists.

- Allow me to introduce myself more fully. I'm Peter Alison, one of America's greatest writers of unimportant books.

- Oh, you are an author, a novelist? Uh, what kind of things do you do?

- Mysteries.

[...]