In 1807, the Portuguese prince regent Dom Joao made an extraordinary decision. Napoleon's troops were closing in on Lisbon, so he chose to transplant his entire court and government to Portugal's largest colony, Brazil. About 10,000 aristocrats, ministers, priests and servants clambered aboard a rickety fleet and, after a rough passage, they spilled off their ships bedraggled and lice-ridden – much to the astonishment of their New World subjects.

Thus began thirteen years of imperial rule from Rio de Janeiro. But the “tropical Versailles” that grew up against the city's jungle-clad mountains only partly obscured the brutal workings of what was then the largest slaving port in the Americas. And while the court grappled with the dark side of its own empire, Brazil was coming of age.

Patrick Wilcken brings this remarkable period to life, blending vivid contemporary testaments with a rich evocation of a time when European royalty went native.