Feargus O'Sullivan

The Pont Simone-Veil in Bordeaux by Rem Koolhaas’ OMA is more than a conduit for traffic — it creates new public spaces for once-separate communities to come together.

Eight years after Paris city officials resolved to clean up the Seine once and for all, the city has declared victory over the E. coli, enterococci and other assorted micro-organisms that for centuries would strike down the unfortunate bather. From July 30, the river’s newly pristine waters will host the Olympic open-swimming competitions — that is, unless rainstorms overwhelm the new water treatment system and force the events indoors. No host has staged Olympic swimming in an urban river since

The new government’s promise to build 1.5 million homes in the next five years will only start to ease the situation. How about developing a new London next to the one already there?

Paris Mayor Anne Hidalgo wants to transform the Eiffel Tower by leaving up the Olympic rings. The tower has been changed before.

The new facility expands capacity and integrates train and bus travel.

Belgium’s capital became notorious for ugly high-rises and haphazard urban planning in the 1960s. But the city’s new wave of development could be different.

The temptation to ban short-term rentals is strong. But cities would do better to step up regulation.

The Ukraine capital’s app has been almost universally adopted by residents, as officials have pivoted from a focus on convenience to safety.

Muscat’s plan for the future looks to mid-rise developments and more green spaces rather than the reach-for-the-heavens architecture seen elsewhere in the region.