Yes, the iconic climax of Indiana Jones and the Last Crusade (1989) was filmed on-location at Petra, Jordan. The building shown as the "Temple of the Sun" (housing the Holy Grail) is actually Petra's most famous monument, Al-Khazneh (The Treasury). While the exterior shots are real, the interior scenes were filmed on a soundstage at Elstree Studios in England, as the real Treasury is essentially a hollow, undecorated tomb chamber. This film is widely credited with putting Petra on the map for Western tourists; before the movie's release, the site saw only a few thousand visitors a year, but it soon became a global "bucket list" destination. In 2026, you can still walk through the "Siq" (the narrow canyon) just as Harrison Ford and Sean Connery did, though you unfortunately won't find any ancient knights or glowing grails inside the Treasury today.