Joint Security Area, South Korea - A deafening silence greets visitors as they step out of the Freedom House after a briefing on the history of the Koreas and the war.

A few steps away from the Military Demarcation Line that divides the two Koreas, the tension cuts through the air.

Not far, on the northern side of the Joint Security Area (JSA), the truce agreement was signed between North Korea and the United Nations Command in 1953, signalling the end of the Korean War.

Suddenly, the silence in one of the most militarised zones in the world gives way to infamous propaganda music.

Watchful South Korean soldiers wear dark sunglasses and cameras from the South and the North add to the palpable unease.