Subterranean discoveries: Rare Titanic footage and a medieval treasure trove

This week in our travel roundup: Footage of the Titanic revealed for the first time, the medieval treasure trove found under the streets of Amsterdam and the Air New Zealand flight that went on a 16-hour round trip from Auckland to Auckland.

source https://www.cnn.com/travel/article/travel-news-subterranean-discoveries/index.html