The most important buliding is the Hôtel de Bourvallais. You can find it at 13 place Vendome in Paris.

This building houses the Chanceliers and Gardes de Sceaux
and has done so for over 250 years.

Here is a photo!

The Hotel is an interesting buillding with a unique history all its own.

Here are a few photos of the interior and gardens of the hotel.

You can visit the hotel online at http://www.justice.gouv.fr/reportag/bourv/bourv3.htm