US President Donald Trump has become the first foreign head of state to meet Japan's new Emperor who took the throne at the start of the month.
The President and the First Lady met with Emperor Naruhito and Empress Masako inside the Imperial Palace.
It's the most official and prestigious opportunities for any guest to Japan.
Earlier, the Trumps were greeted with a welcome ceremony.
They received a salute by the Self-Defense Forces' guard of honor.
In the evening, the Imperial couple will host a state banquet in honor of the Trumps.
The US president will soon sit down with Prime Minister Shinzo Abe. They're expected to discuss the ongoing negotiations about a trade deal.
There are still sticking points.
Trump has complained about the size of his country's trade deficit with Japan.
Abe is expected to outline Japanese investment in the US and at this point, is unlikely to agree to much more than speeding up talks.
In a tweet Sunday, Trump signaled he's willing to wait for results until after Japan's Upper House elections this summer.
North Korea is also expected to be on the agenda. Earlier this month, the country fired short-range ballistic missiles.
But Trump says he's not disturbed by them. He suggests he expects the North will take action toward denuclearization.
Abe is again expected to ask for Trump's support to resolve the issue of abducted Japanese nationals. More than a dozen were taken by North Korean agents in the 70s and 80s.