La Motte-Tilly Castle from 1754
Read about the castle on Wikipedia (only in French, German, Dutch or Russian).
Blancs Fossés Dolmen (a part of the Pierre Couverte dolmen group) from the Neolithic Chalcolithic around 1800 BC.
Read about the dolmens on Wikipedia (only in French).
Troyes, the capital of the Aube county
Mathaux - Timbered church (pans de bois) from the 18th century and the Aube river
The photos are made here :