天空的秘密

Using an octocopter, historian Bettany Hughes and aerial archaeologist Ben Robinson, explore various sites of historic interest from a new perspective, the air.

看《天空的秘密》前可以先留意“Using an octocopter, historian Bet...”。它和它的故事氛围共同组成了这部作品的基础印象，适合按年份和地区找片的的观众慢慢筛。