When Sweden and Denmark built a connection between their countries, Sweden preferred a bridge, and Denmark preferred a tunnel, they each built their half and connected them in the middle with an artificial island. The Øresund Bridge is unique in the world.
I’ve driven over this bridge about 4 times. And each time I was in awe of the views and the architecture. It’s a very nice drive but can be a bit scary when you’re on the bridge with higher winds.
It brings you to Sweden from Denmark and vice versa ofcourse. It does cost some money to cross as it is a toll road.