No. 1 Poultry, a distinctive postmodern office and retail building on a wedge-shaped site at the Bank junction in the City of London.
 
Designed by James Stirling (with Michael Wilford) and completed in 1997, it was Stirling’s last major built work and is often discussed as a key example of British postmodernism, though Stirling himself resisted the label. Architecturally, it’s often read as a playful, almost theatrical response to its tight, triangular site and to the grand classical and Victorian buildings around Bank.
 
Interesting fact...
Although strikingly different than its neighbours it was almost next level.In the 1960s, developer Peter Palumbo commissioned Mies van der Rohe to design a Seagram Building–style tower with a public piazza. Planning permission was granted in 1969, but by the time the site became available in the early 1980s, tastes had shifted and there was a strong campaign to save the existing Victorian Mappin & Webb building. The Mies scheme was ultimately rejected, and Palumbo then turned to Stirling, resulting in the building you see today.