Another great one is Kuélap in northern Peru, an off-the-radar stone-fortified city atop a craggy limestone reached in a two- or three-hour trek.

另一个很不错的是秘鲁北部的Kuelap, 它位于一个在非雷达区域用石头装饰的城市，上面覆盖着石灰岩，这里需要两到三个小时跋涉。

youdao

"There may be limestone thousands of meters beneath the city, but not hundreds of meters," he said.

“石灰岩或许存在于城市下方数千米，却不是几百米处，”他说。

youdao

A city of limestone towers rises in western Madagascar.

一座石灰岩塔林城矗立在马达加斯加的西部。

youdao

The 339 modern rooms at the imposing, steel-and-glass Trump Hotel Chicago soar above the Loop, many with giant all-limestone bathrooms, fireplaces, kitchens and floor-to-ceiling windows with expansive city and water views.

BBC: Business trip: Chicago