A luminous portal made of fascinating light transmitting concrete has been created on Germany’s most beautiful and expensive island Sylt.  Embedded in dunes, and with panoramic views of the North Sea, the Sylter Welle is a unique adventure pool with indoor and outdoor areas.  It enjoys a prominent location at the end of the pedestrian zone of Westerland on Friedrichstrasse, and lies directly in front of the beach promenade.   Now it boasts an eye-catching entrance that entices the visitor to step through a portal in the form of a stylized dune.  The striking feature is that at dusk and at night, the portal – which is made of Lucem Lichtbeton –  begins to shine from the inside through thousands of fine, embedded, light-guiding fibres.