The 'XXX' films are mainly set in the USA, where the protagonist Xander Cage is from and where he works as an extreme sports athlete and secret agent. Some of the landmarks and attractions featured in the films are the Golden Gate Bridge, the Grand Canyon, and the Smithsonian Institution.
The third film, 'XXX: Return of Xander Cage', is partially set in Colombia, where Xander and his team visit a remote island to retrieve a device called Pandora's Box. Some of the landmarks and attractions featured in the film are the Tayrona National Park, the Minca waterfalls, and the historic city of Cartagena.
The first film, 'XXX', is mostly set in Russia, where Xander is sent to infiltrate a group of terrorists called Anarchy 99. Some of the landmarks and attractions featured in the film are the Red Square, the Kremlin, and the Anarchy 99 base in the mountains of the Czech Republic.
The second film, 'XXX: State of the Union', is partially set in China, where the villainous Deckert plans to overthrow the US government with a rogue faction of the military. Some of the landmarks and attractions featured in the film are the Great Wall of China, the Forbidden City, and the Shanghai Tower.
The third film, 'XXX: Return of Xander Cage', is also partially set in the Dominican Republic, where Xander is living in exile and enjoying his extreme lifestyle. Some of the landmarks and attractions featured in the film are the Santo Domingo Cathedral, the Columbus Lighthouse, and the Mamey Peak.