Photo: Benh LIEU SONG (Flickr), CC BY-SA 3.0 Free landmarks in Paris
Photo: Benh LIEU SONG (Flickr), CC BY-SA 3.0 
Photo: ZeusUpsistos, CC BY-SA 4.0 Arc de Triomphe
Free at certain times
Photo: Marie-Lan Nguyen, Public domain Palais-Royal Garden
Free, always
Photo: Jebulon, CC0 Pont Alexandre III
Free, always
Photo: Britchi Mirela, CC BY-SA 3.0 Le Mur des je t’aime
Free, always
Photo: Des Racines et des Ailes, CC BY 3.0 Place des Vosges
Free, always
Photo: Cristian Bortes from Cluj-Napoca, Romania, CC BY 2.0 Place de la Concorde
Free, always
Photo: Rmrfstar, CC BY-SA 3.0 Pont Neuf
Free, always
Photo: Britchi Mirela, CC BY-SA 3.0 Place de la République
Free, always
Photo: Pierre Blaché from Paris, France, CC0 Place du Tertre
Free, always
Photo: APK, CC BY-SA 4.0 Montparnasse Cemetery
Free, always
Photo: Benh LIEU SONG, Public domain Eiffel Tower
Free outside, paid inside
Photo: Peter Rivera, CC BY 2.0 Palais Garnier
Free outside, paid inside
Photo: CaBLe27, CC BY 2.0 Les Invalides
Free outside, paid inside
Photo: Moonik, CC BY-SA 3.0 Panthéon
Free outside, paid inside
Photo: Chabe01, CC BY-SA 4.0 Hôtel de Ville
Free outside, paid inside
Photo: Myrabella, CC BY-SA 3.0 Pont des Arts
Free, always
Photo: Mbzt, CC BY 3.0 Arènes de Lutèce
Free, always
Photo: Tangopaso, Public domain Mémorial des Martyrs de la Déportation
Free, always
Photo: Des Racines et des Ailes, CC BY 3.0