On Dec. 6, 1884 — 36 years after construction had begun — the 3,300-pound aluminum capstone was placed atop the obelisk, making the Washington Monument, at 555 feet, the world’s tallest ...
The Washington Monument L’Enfant’s initial framework ... That year, the proud country celebrated the awe-inspiring obelisk as the tallest structure in the world. The Lincoln Memorial At ...
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