Utrecht Central Library & Post Office / Zecc Architecten + Rijnboutt

The national monument is best known for its reception hall. The rhythm of the parabolic ceiling, the glazed yellow stones, and robust ornaments. “This entrance was the only place that was accessible to the public. But around the hall was another 8,000 square metres of business space. That’s a fascinating idea. So much hidden space right in the middle of the city,” says the library’s architect, Bart Kellerhuis from Zecc, who were also responsible for the interior.