Or: WHAT IS IN THE TOWER?!?

For five seasons now, audiences worldwide have been captivated by Downton Abbey — and the stunning estate that it calls home.

Courtesy of MASTERPIECE

That estate is really called Highclere Castle, and most of the show's "upstairs" interiors, as well as its exteriors, are shot on the location.

Throughout the show, we've been able to see a great deal of what this stunningly beautiful estate has to offer.

Chris Jackson / Getty Images

There is one aspect of Downton/Highclere, however, that I have wondered about.

PRNewsFoto / Crystal Cruises

Something that has, at times, piqued my curiosity.

Courtesy of Carnival Film & Television Limited 2011 for MASTERPIECE

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