Hyllie and the Öresund Link

Several systems at once over just a few kilometres. Denmark runs on 25 kV 50 Hz, Sweden on 15 kV 16.7 Hz; trains therefore have to be dual-system capable. On top of that comes the switch between Danish right-hand running and Swedish left-hand running, a change of signalling system and – of practical relevance to you – a currency change from krone to krona at a completely different exchange rate.

On services from Denmark, yes. Checks have taken place here since 2016, at varying intensity depending on the political situation. For spotters that means two things: always carry valid ID, and expect trains from Denmark to stand here longer than the timetable suggests. The longer stops are actually an advantage for photography.

The base service is made up of dual-system multiple units on regional services between Malmö and Copenhagen, supplemented by Swedish local traffic that terminates or starts at Hyllie. On top of that come freight trains at irregular intervals and night train services towards Germany. Long-distance services to Stockholm, by contrast, you'll only find at Stockholm Central Station or in Malmö.

Directly and quickly: from Copenhagen Central Station it's a good twenty minutes via the airport and the link. That makes Hyllie an ideal half-day destination if you're in Copenhagen anyway. Remember your ID, and that buying a ticket means crossing between two currency zones.

To a limited extent. The station itself is modern functional architecture with little charm. The real subject lies west of the station, where the approach to the bridge ramp runs across open land: long sightlines, an open horizon, good light in the late afternoon. How to check such locations against the sun's position in advance is covered in the article planning the sun's position at a photo spot.

Because the link is used almost entirely by a single service product: regional traffic between Zealand and Skåne, run with a uniform dual-system fleet. Over the course of hours you therefore see essentially the same vehicle type. Anyone after variety should combine Hyllie with Fredericia or Padborg, where noticeably more varied rolling stock turns up.

It exists, but isn't predictable. Heavy trains run over the link between Sweden and the continent, spread across the whole day and night. Anyone waiting specifically for one needs luck and patience. Some approaches to narrowing things down are covered in the article tracking freight trains live.

An hour and a half to three hours. The service is so dense that in that time you'll have seen everything that runs regularly. After that the picture repeats itself. It makes more sense to spend the rest of the day at Malmö Central Station or back in Copenhagen.

Skåne is flat and open, and the wind off the Öresund is almost always there. There's shelter on the platform, none in the open land to the west of it. Bring windproof clothing and don't plan long spells outdoors without somewhere to retreat to – how to approach this systematically is described in the article weather and emergencies at the spot.

Yes. The service is reliable, access is free, distances are short, and the displays make the traffic predictable. Anyone documenting cross-border operations for the first time will find a very manageable situation here. The matching basic framework is provided in the article spotting at border stations.