At once minimalist, iconic and daringly imaginative, the Casa da Música is the beating heart of Porto's cultural scene and the home of the Porto National Orchestra. Dutch architect Rem Koolhaas rocked the musical world with this crystalline creation – the jewel in the city's European Capital of Culture 2001 crown.

　　The wonky cuboid conceals a shoebox-style concert hall lauded for some of the world's best acoustics. If your curiosity has been piqued, join one of the daily guided tours.