Stevns Klint
UNESCO World Heritage Site (2014): A 15 Km Chalk And Limestone Cliff Whose Layers Record The Asteroid Impact That Ended The Age Of The Dinosaurs; Hojerup'S Half Fallen Old Church Stands On The Edge · Hojerup, Region Zealand
Stevns Klint is a low chalk and limestone cliff running for roughly 15 km along the east coast of Zealand, about an hour south of Copenhagen, and it is a UNESCO World Heritage Site for one thin, dark line in its face. That band, the so-called fish clay, marks the moment about 66 million years ago when an asteroid struck what is now Mexico and ended the age of the dinosaurs; its unusual iridium content, measured here and elsewhere, helped build the impact theory. Above the line, pale bryozoan limestone shows life recovering. Visitors come to see that boundary with their own eyes, to walk the cliff-top path, and to stand at Hojerup Old Church, a medieval church on the edge whose choir fell into the sea in 1928. Along the same coast lie an old limestone quarry with steps to the shore and the Cold War Museum Stevnsfort, a fortress tunnelled into the chalk. The honest caveat: the cliff is only some 40 m high, the famous line is thin and needs pointing out, and the beach is stony and partly closed by rock falls, so it rewards curiosity more than a quick photo stop.
Stevns Klint, from Hojerup Old Church to the Cold War Museum Stevnsfort, Hojerup, Region Zealand, Denmark
The cliff, the cliff-top path and the churchyard at Hojerup are open all year. Hojerup Old Church is usually open during the day in the main season, with shorter or weekend-only opening in winter - confirm locally. The Cold War Museum Stevnsfort is seasonal, typically open from spring to autumn and visited largely on guided tunnel tours; check the current schedule. By car Hojerup is roughly 1 hour from Copenhagen. By public transport take the train to Koge, the local line to Store Heddinge or Rodvig, then a bus or a walk of roughly 4-6 km - confirm timetables. Book Stevnsfort tours ahead in summer.