These are also unesco cards. I've never seen anyone offering them, just Marie, so i guess they're kind of hard-to-get. They're from France - Royal Saltworks at Arc-et-Senans - and Belgium - Plantin-Moretus House-Workshops-Museum Complex.
"The Saline Royale (Royal Saltworks) is a historical building at Arc-et-Senans in the department of Doubs, eastern France. The architect was Claude-Nicolas Ledoux (1736–1806), a prominent Parisian architect of the time. The work is an important example of an early Enlightenment project in which the architect based his design on a philosophy that favored arranging buildings according to a rational geometry and a hierarchical relation between the parts of the project.
The Institut Claude-Nicolas Ledoux has taken on the task of conservator and is managing the site as a monument. Unesco added the "Salines Royales" to its List of World Heritage Sites in 1982." - in: wikipedia
"The Plantin-Moretus Museum is a museum in Antwerp, Belgium honouring the famous printers Christoffel Plantijn and jan Moretus. It is located in their former residence and printing establishment, Plantin Press, at the Friday Market.
The printing company was founded in the 16th century by Christoffel Plantijn. After his death it was owned by his son-in-law Jan Moretus.
In 1876 Edward Moretus sold the company to the city of Antwerp. One year later the public could visit the living areas and the printing presses. In 2002 the museum was nominated as Unesco World Heritage Site and in 2005 it was inscribed onto the World Heritage list.
The Plantin-Moretus Museum possesses an exceptional collection of ypographical material. Not only does it house the two oldest surviving printing presses in the world and complete sets of dies and matrices, it also has an extensive library, a richly decorated interior and the entire archives of the Plantin business, which were inscribed on Unesco's Memory of the World Programme Register in 2001 in recognition of their historical significance." - in: wikipédia