Sinuiju lies across the river from Dandong, China, and is connected to it by the Sino-Korean Friendship Bridge. If you're coming by train from China, Sinuiju is the first city you'll see.
It is possible to get within a few hundred feet of Sinuiju by boat from Dandong. Various tour boat operators along the Yalu River surrounding the Friendship Bridge charge ¥20-50.
In wintertime, the river freezes over and locals on both sides trek across the border to trade or defect. However, the North Korean army regularly patrols the border, and any foreigners caught on the wrong side can expect to be detained and accused of spying.
