A massive spiral appears on the floor of a seven-sided temple in this city whose apex includes the largest pure crystal stone in the world. The facade of a building in this city features asymmetrical concrete basins that send waterfalls into a reflecting pool. (-5[1])16 hyperboloid curves separate thousands of painted tiles in this city’s main cathedral. (10[1]-5[1])Residents of this city settled in wooden houses while waiting for the construction of equitable housing blocks inspired by those in Le Corbusier’s (10[1])Radiant City. Roberto Marx designed the landscapes outside a Congress building in this city with two half hemispheres on its roof. Starting in the 1950s, this city was planned around the shape of an airplane (10[2])by (10[1])Lúcio (10[1])Costa. Oscar (10[1])Niemeyer designed numerous civic buildings in, for 10 points, what planned capital of Brazil? ■END■ (10[1])