The summit will be the first meeting between Trump and Kim and mark a turnaround of relations between the two leaders after a long-running exchange of furious threats and insults.
They include the Capella Hotel on Sentosa Island, the summit venue, and the places surrounding the Shangri-La Hotel and the St. Regis Hotel where Trump and Kim are expected to stay, respectively.
Media captionTrump-Kim summit: Can you achieve peace on a plate? While hostilities ended with an armistice in 1953, no peace treaty has been signed yet.
Tuesday's Singapore meeting is the climax of the astonishing flurry of diplomacy on and around the Korean peninsula this year, but critics charge that it risks being largely a triumph of style over substance.
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Cuba has denied targeting embassy staff, and the U.S. has not blamed the country's government for the suspected attacks. The Canadian government followed suit in April and directed the families of diplomatic staff in Cuba to return home.
Trump is dangling before Kim visions of protection, economic investment and even a White House visit, in return for a commitment to abandon his nuclear weapons program.
The two were North Korean cameramen waiting to capture images of their leader, who all North Koreans are duty-bound to revere, arriving for a historic summit with United States president Donald Trump.
In the historic first meeting between the leaders of the technically-still-warring nations, Trump is prioritizing instinct over planning.
March 27: Mr Kim makes a surprise visit to Beijing for a meeting with Chinese President Xi Jinping in an apparent move to strengthen his leverage ahead of any talks with Mr Trump.
Trump, speaking in Canada on Saturday, said any agreement at the summit would be "spur of the moment", underscoring the uncertain outcome of what he called a "mission of peace".
Gidley said he expected Trump and Kim to have "an awesome conversation without Dennis Rodman in tow".
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Trump had told Trudeau any retaliation would be a mistake and the prime minister agreed that it was "not something we want to do". The US had imposed hefty tariffs on steel and aluminium imports from key allies the Europe Union, Canada and Mexico last week.
"We'll most likely see an unprecedented scale of protection on land, sea and air as this summit is the biggest issue in the world right now", said Chae Kyou-chir, chief executive of Top Guard, a prominent South Korean security and protection firm.
May 22: Mr Trump and Mr Moon meet at the White House to discuss the Trump-Kim talks.
A woman guest, challenged by the same North Korean official, said she had only taken photos of the lobby and refused to show her phone.
"I think we can presume that North Korea made more demands to Singapore than the United States did in terms of security".
The North Korean motorcade drives out from Singapore's Changi Airport after Kim Jong Un's arrival in the city-state. The impersonator, who would give only his stage name Howard X, said he was held by immigration authorities for two hours before being released and told to steer clear of summit venues. No other politician in the U.S. could have had a summit because no one has ever recognized North Korea as a proper nation.
While both sides have repeatedly spoken on the need for "complete denuclearization" on the Korean Peninsula, Kim indicated that he would be ready to give up his nukes only if all of his security concerns are met. Trump has previously sought to assure the North Korean leader that Washington will not seek to wreck his rule by turning his country into the next Libya.
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