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Paro, Bhutan
Paro (Dzongkha: སྤ་རོ་) is a town and seat of Paro District, in the Paro Valley of Bhutan. It is a historic town with many sacred sites and historical buildings scattered throughout the area. It is also home to Paro Airport, Bhutan's sole international airport.

Planes can only land during the day at Paro.
Cantilevered 7,364 feet above sea level, Paro is Bhutan's only international airport -- yet few pilots are cleared to land there, so tricky is the approach. Landings are only allowed in good visibility conditions (for starters, daylight) because there's no radar, so planes must make a manual approach. They must also weave between hills and over houses before curving onto the runway.