Herzog & de Meuron's Tate Modern was the most significant building of 2000

To kick off our 21st-Century Architecture: 25 Years 25 Buildings series, we profile Herzog & de Meuron's Tate Modern in London – the most significant building of the year 2000.

The turn of the millennium prompted the opening of numerous high-profile buildings, but none have had the lasting impact of Tate Modern, set inside an abandoned power station on the banks of the Thames in London.

Opened in May 2000, the gallery was ahead of its time with its focus on reuse, rejuvenating...