Surprise Unesco cards

Claus surprised me again. We had a swap for 5 unesco cards but he sent 7 cards, 2 of them as extra cards.

The 1st card is from Oman, the Archaeological Sites of Bat, Al-Khutm and Al-Ayn and the 2nd from the Netherlands, D.F. Wouda Steam Pumping Station.

"The protohistoric site of Bat lies near a palm grove in the interior of the Sultanate of Oman. Together with the neighbouring sites, it forms the most complete collection of settlements and necropolises from the 3rd millennium B.C. in the world." - in: www.whc.unes.org/en/list/434

"The ir. D.F. Woudagemaal (ir. Wouda pumping station) in the Netherlands, is the biggest currently running steam-powered pumping station in the world. On October 7, 1920 Queen Wilhelmina opened the pumping station that is used to pump out redundant water from Friesland.

In 1967, after 47 years running on coal, the boilers were rebuilt to run on oil. Since 1998 the ir. D.F. Woudagemaal has been listed on the UNESCO World Heritage Site list." - in: wikipedia