Africa’s second-largest country and bordered by no fewer than nine nations, the Democratic Republic of Congo (DRC) is the beautiful, mesmeric, enthralling heart of the continent. Its turbulent history, from the bloody reign of Belgium's King Leopold to Mobuto Sese Seko’s military dictatorship, is no secret, but for now the country is enjoying a period of relative stability, with tourism providing a much-needed beacon of hope. And that's really good news, as this is a place that truly is…