Astérix aux Jeux olympiques / Asterix at the Olympic Games
See en.wikipedia.org

Astérix gladiateur / Asterix the Gladiator
See en.wikipedia.org

Obelix actually had a role in the delivery of the menhirs! (link)

Astérix et Cléopâtre / Asterix and Cleopatra
See en.wikipedia.org

The Eiffel Tower features as a big dovecote in the story "Lutèce olympique" ("The Lutetia Olympics") in the album "Astérix et la Rentrée gauloise" ("Asterix and the Class Act").
See fr.wikipedia.org

L'Odyssée d'Astérix / Asterix and the Black Gold
See en.wikipedia.org

Astérix chez les Pictes / Asterix and the Picts (Hadrian's Wall)

Asterix and the Chariot Race