In Houston, where the oil bust of the mid-1980s led to see-through buildings devoid of tenants, brokers are wary of space proliferating in the "energy corridor, " running along Interstate 10 from western Houston toward the suburb of Katy.

FORBES: The great suburban overbuild

So as advanced Southern Corridor schemes might appear on paper, the real space to watch is when and how Azerbaijan decides to play their aces.

FORBES: Pipeline Poker: Azeri Aces

Most importantly, the corridor was a private passageway that was built on public space, and pushed the limits of his power.

BBC: Florence��s best-kept secret