In its role as the official residence of the President of Finland, the Presidential Palace has hosted a number of important foreign visitors and dignitaries. Royal visitors to the palace have included Carl XVI Gustaf of Sweden, Olav V of Norway, Elizabeth II of the United Kingdom, Juan Carlos I of Spain, the Mohammad Reza Pahlavi of Iran, and Emperor Akihito of Japan. A number of US Presidents have visited the palace, including Gerald Ford, Ronald Reagan, and George H. W. Bush. Other distinguished visitors have included Pope John Paul II, Josip Broz Tito, Nikita Khrushchev, Boris Yeltsin, Horst Köhler, Xi Jinping, Shinzō Abe, and Vladimir Putin. On July 16, 2018, a summit between US President Donald Trump and Russian President Vladimir Putin was held at the Presidential Palace.