Conan O'Brien on Taking His Late-Night Show to Cuba

"I made countless friends and had one of the best experiences," he wrote.

It's the first U.S. late-night show to film in the country since the United States embargo began back in 1962.

"I just spent the last four days shooting my show all around the city of Havana," O'Brien, 51, tweeted on Monday. "I made countless friends and had one of the best experiences of my life."

O'Brien concluded by noting there were "many laughs, but that could also be the rum."

The episode, set to air on March 4, is intended to give O’Brien’s audience a rare glimpse into Cuban daily life, representatives of the show told Deadline.

O'Brien's visit to Cuba follows President Obama announcing in December he would normalize relations with the country.