Harpa Concert Hall in Reykjavík, Iceland

Harpa Concert Hall in Reykjavík, Iceland

Give the city planners in Reykjavík credit. When they set out to build the city’s first official concert hall and performance centre, they embraced modern design in a big way. Harpa's exterior features this honeycomb-like façade of glass panels. Some of the glass is coloured, or lit from within. The result is a stained-glass effect that can change over the course of a day as sunlight and artificial light accentuate different aspects of the glass patterns.