Andorra, located in the Pyrenees between France and Spain, is a small country.

There are still border checkpoints between France and between Spain, but normally
no passport checks is done for tourists.

Andorra is not an Schengen area country like France and Spain, so legally there can
be a check and passport stamps should exist.

In Aug 2011, I visited the country, and asked for it at the tourist office in Andorra la Vella (the capital). They said the stamps exist at the borders and they'll give one when requested.

However, I took buses in/out of Andorra, and the buses didn't stop at the borders, so
I missed the chance.

I believe it can be obtained at the borders, please report me if somebody has got one.

Principaute de Monaco is the 2nd smallest country surrounded by Southern France and the Mediterranean.

Monaco is a Schengen area country, and what is more, checkpoints don't seem to exist. However, the passport stamp is available at an information desk.

In Nov 2011, I visited monaco, and asked for the stamp at the information centre just across a small park with a fountain in front of the casino. They directly stamped on my passport for no cost. The stamp had no date.