I took a day trip by train across this unique bridge from Copenhagen, Denmark to Malmö, Sweden. I bought these bridge postcards in Malmö in May 2015.
The Øresund or Öresund Bridge (Danish: Øresundsbroen [ˈøːɐsɔnˀsˈb̥ɔn̩], Swedish: Öresundsbron [œːrəˈsɵnːdsˈbruːn], joint hybrid name: Ø̈resundsbron) is a double-track railway and motorway bridge across the Øresund strait between Scania (southernmost Sweden) and Denmark. The bridge runs nearly 8 kilometres (5 miles) from the Swedish coast to the artificial island of Peberholm, which lies in the middle of the strait. The crossing of the strait is completed by a 4 km (2.5-mile) underwater tunnel, called the Drogden Tunnel, from Peberholm to the Danish island of Amager. The term Øresund Bridge often includes this tunnel.
The Øresund Bridge is the longest combined road and rail bridge in Europe, and connects two major metropolitan areas: Copenhagen, the Danish capital city, and the major Swedish city of Malmö.