Which country splits its national government among three capital cities — one administrative, one legislative and one judicial?

Explanation

South Africa keeps its executive in Pretoria, its Parliament in Cape Town and its Supreme Court of Appeal in Bloemfontein; Bolivia is the tempting answer, but it divides its government between two cities, not three. There is a fourth city in the story too: the Constitutional Court, South Africa's highest court, sits in Johannesburg.