The labyrinth structure in which the work unfolds - something of an architectural feat in itself - has dark walls.

The arch is a spectacular architectural feat, and frames the stage beautifully from all viewing positions.

Learn about the wonders behind this architectural and engineering feat as you view it up close.

It was both a monumental architectural feat and an important political achievement.

The advancing technology of steel construction and high rises at this time was quite an architectural feat.

But their architectural feats put all of ours to shame, nonetheless.

It represents one of man's great architectural feats and was technically a major step forward.

The hotel is an architectural and engineering feat, from the 30-story circular atrium to the 57th-floor swimming pool.

That is not to say that the city has not managed its share of architectural feats.

The Independent calls the museum "an astonishing architectural feat".