Rooms at the top: the cutting-edge homes appearing on high-rise roofs (FT)

A striking contemporary mansion is being marketed as "the top property in Spain" and "without doubt the most impressive property on Mallorca", with a €65 million (c.£55m) asking price.

A billionaire and an architect have revealed a plan to build an entirely new city for five million people in an American desert. They just need a location and around $400bn to do it.

30th edition of the annual competition saw 228 entries come in from 45 countries as part of Paris Real Estate Week.