Where am I?

Update: this is a manor house located in Sinaia, Transylvania, Romania.  It's located next door to Peles Castle, the interior of which is absolutely spectacular.  Just watch out for vampires hiding in dark corners!

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It was October and some friends and I were craving Europe.  On a few weeks notice we booked flights, a rental car, a few nights in various hotels, and we were off!  It was ironically a good place to visit in October of all months.

The roads wound through green fields filled with long grasses and stands of trees in the distance.  We sped through hills and valleys, the car fast against the smooth, unruffled concrete.  Signs were posted stating the speed limit, but no one followed them.  It was a pleasure driving there, where everything seemed to flow at its own pace.

Mid-morning we stopped for some sightseeing.  We were craving coffee and castles, and as we strolled the grounds we thought we had found our destination.  It wasn't until we were inside reading the signs that we realized we should have walked about five minutes farther.  The building was still a stunning example of a manor house, right next to what was a truly spectacular castle.

And this is in a land where you'll want to see at least one of the castles!

So where am I?  Any guesses?