Exploration and construction of future geothermal plants present a high cost for poor countries.

The construction of the bridge's structure presented major engineering challenges.

The construction of Okhotny Ryad presented a number of engineering challenges.

However, its unusual construction presents some problems for the player.

The construction of a second skin may also present a significant increase in materials and design costs.

The construction of the building's foundations and the complexity of the site presented a civil engineering challenge.

Financing and construction presented challenges as Marineland was the first attempt at capturing and sustaining sea creatures.

Railroads, construction sites and factories all presented too much risk for many companies' underwriters.

The construction of this project presented a major technological challenge.

Turrell's construction presents itself from the exterior as an oak-clad building raised on stilts.