Budapest’s new concert hall is part of a $153 million Palace of Fine Arts, and the Cleveland Orchestra took it for a test drive. “It is a state-of-the-art building, splashily modern without being ostentatious, with all sorts of pastel colors to catch the eye. The lobbies are sweeping spaces made airy by tall windows that provide stunning views of the Danube and the new National Theatre – itself an architectural dazzler – just across the plaza.”