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Jimmy Fallon is calling his "Tonight Show" episode airing Tuesday night a "celebration" of Puerto Rico. The entire show was taped in the island.

"I think this shows Puerto Rico that we love them and we didn't forget and we love them and we want to support them and the rebuilding. I mean it's already back. It's open for business," Fallon told NBC News.

The show aims to boost tourism and let viewers know about other ways to help in the rebuilding. Fallon said he was inspired by "Hamilton" creator Lin-Manuel Miranda.

"I gotta say, we had Lin Manuel Miranda announce he was taking the show ("Hamilton") to Puerto Rico," said Fallon. "I was just inspired because that's so hard to do. I don't think people understand how hard it is to take a Broadway show outside of Broadway."

Fallon did the same, taking his entire show down to the island.

"It's one of the best shows, if not the best show, we've ever done. It's amazing," he told the Associated Press.

Watch "NBC Nightly News" Tuesday evening for an interview with Fallon.

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Jimmy Fallon is hosting @FallonTonight from Puerto Rico, and tells @gabegutierrez he's doing it to "show the resilience, the spirit...the culture of Puerto Rico."



More of their interview -- and the opening of Hamilton on the island -- tonight on @NBCNightlyNews. pic.twitter.com/Dk2hrAiIt8 — NBC Nightly News with Lester Holt (@NBCNightlyNews) January 15, 2019

Miranda, with a little one-time help from Fallon, performs "The Story of Tonight" number from his Broadway hit on Tuesday's broadcast. Miranda is raising relief money in the U.S. territory for artists and cultural groups that were devastated by 2017's Hurricane Maria.

Music artists Bad Bunny, José Feliciano and Ozuna also are featured, and Fallon showcases island activities and plays foodie with chef-activist Jose Andrés, who led a grass-roots effort to feed residents of the devastated island.

A music video with Fallon, Bad Bunny and "Tonight" house band The Roots was filmed in San Juan's historic district and includes marching bands and dancers, the host said.

"Tonight" closes with Feliciano and Ozuna singing the beloved Puerto Rican tune "En Mi Viejo San Juan" ("In My Old San Juan").

The show aims to highlight Puerto Rico's culture as well as what it still faces after the disaster, including restoration costs estimated by the government at more than $130 billion.

Fallon said he's been asked by some people why he and "Tonight" took on the complicated, costly episode when he's not from Puerto Rico. He has a ready answer.

"But I'm American, and we've got to step up, we've got to help each other," he said. "That's the message that Lin and Jose are sending through their charities and what they're doing."

The pleased reaction from Puerto Ricans to the show's presence was overwhelming, he told the AP on Monday: "I said 'gracias' so much, my Spanish got much better."

The episode reflects the show's effort to stay fresh, Fallon said.

"We're always changing, always doing something different and always growing. And I think it's good, as my mom would say, to get out of the house" and, for Fallon, hit the road to meet the show's viewers.

Here's a sneak peek at what's in store for #TonightShowPuertoRico!



Don't miss this special episode tonight at 11:35/10:35c on @NBC. pic.twitter.com/5x9F8Xlmm1 — Fallon Tonight (@FallonTonight) January 15, 2019

While other late-night competitors such as CBS' Stephen Colbert have made today's contentious politics their bread-and-butter and enjoyed ratings boosts, "Tonight" has kept to its course as a mainstream show that reflects Fallon's sunny demeanor. A lively hour with the potential to do good is in his wheelhouse.

During his brief island downtime, Fallon visited one struggling area still facing big challenges, including school closures. It's not part of the episode, but viewers are given information on how they can donate to charities aiding in the island's recovery.

Fallon, taking on the role of Puerto Rico's tourism advocate, also strongly suggests taking an island vacation.

"You can have fun and that would mean just as much as giving. It's a win-win," he said.

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