The precast concrete exterior reinforced with glass fiber is intended to resemble limestone.

The glass and concrete exterior gives no hint of the excitement inside the museum.

Scratched on the concrete exterior near the entrance are the figures "6 1/4," the nickname for the hated commissioner.

April 2008 - December 2008: Major upgrades to the concrete exterior of the concert hall.

"They have problems with its concrete exterior," said Dr. Koppelman.

Columns and lighting will be added to the pink concrete exterior.

Made of cement and stone, the hut has a concrete exterior made to look like wood.

Deprived of natural light, female inmates in the center often look as gray as the building's concrete exterior.

Its uncompromising concrete exterior may be a bit of an eyesore, but inside this hotel has a wow factor like no other.

The four levels were enclosed with a concrete exterior, whose evenly spaced perpendicular openings for light and air give the building its distinctive look.