During World War II, the British used artillery forts and a battery on the island to unsuccessfully fend off a Japanese invasion, which transformed it into a prisoner-of-war camp.

It's no wonder the island was known as Pulau Blakang Mati, which roughly translates as "island of death from behind."

In 1970, the island was renamed after a nationwide contest. Sentosa was subsequently developed as a resort and expanded on reclaimed land.

It now attracts around 19 million visitors every year.

Mohamed Shafie, a 79-year-old snake charmer, doesn't expect the Trump-Kim summit to affect his business.

"I think it's very good. Once they come, a lot of people will come here. All the Singaporeans want to see them," he said.

The resort island plans to keep welcoming tourists this week despite boosted security for the summit at the 112-room Capella Singapore hotel.

A group of journalists gathered outside the hotel and across the road, waiting for signs that officials had arrived. Only authorized vehicles were allowed to enter, and hotel restaurants were not taking reservations until after the summit. 

Police have marked the island and some of its surrounding waters as a "special event area," where loud-hailers, flags or banners over a meter (yard) long or wide are banned.

At a preserved fort, World War II cannons were decorated with flowers to honor the historic meeting. Lilies, eustomas, gerberas and olives were "chosen specifically for their representation as symbols of peace."

Adam Chen, a visitor from Hong Kong, thought that it was a nice gesture. "I hope the talks are a success," he said.

Foreign worker Authur Belver said he wouldn't be bothered by extra security checks.

"Ever since I've been working here, the government's doing a great job in keeping Singapore as peaceful as possible. The Singapore government is really capable of doing it," Belver said.

Businesses like the Singapore Mint are optimistic that the summit would go well. It is selling medallions showing a handshake between Trump and Kim.

Roses and magnolias, the national flowers of the US and North Korea, are intertwined under a carving of a dove.

"We hope there is some kind of bonding. Hopefully, the friendship improves from this summit onwards," said its director David Yip. (AP)