Playing in 102 degrees Fahrenheit with high humidity at Stone Mountain, Agassi made light of the conditions to dispatch the Spaniard -- a two-time French Open champion -- in straight sets.

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Full daylight comes through the windows, and gently raised, coved ceilings that make the galleries feel much more spacious have concealed illumination by Fisher Marantz Stone for a balance of natural and artificial light that reveals the glory of the paintings.

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Then he discovered a new Japanese method of cutting diamonds: When viewed under a low-magnification (3x) lens, the stone refracted light in such a way as to give off a pattern of eight heart-shaped sparkles at the bottom of the diamond and eight arrow-shaped fire-bursts through the top--hence the name "hearts-and-arrows" diamonds.

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The trail begins with two hours of a light track until you reach the Carrasqueira, a steep wall of stone crossed with the use of ropes and helmets.

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The walls of stone enclosed in wire mesh filter in natural light at night, light from inside shines out through the basalt rocks.

ECONOMIST: Museum architecture

It appeared as if carved out of stone, but in fact was made of vast segments of hot-wire-cut polystyrene with a light beech veneer.

ECONOMIST: Building design

The funeral procession of family and friends paused in a light drizzle outside the weathered stone house where he was born on October 26, 1916.

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