A lookout post fortification with a view of the Adriatic Sea, on the City Wall, Dubrovnik, Croatia, Europe

Lighthouse at Happisburgh, Norfolk coast, United Kingdom

A Second world War lookout post leaning alarmingly and about to tumble over the edge of the cliff near Aldbrough on Yorkshires East Coast, UK. The coast is composed of soft boulder clays, very vulnerable to coastal erosion. This section of coast has been eroding since Roman times, with many villages having disappeared into the sea, and is the fastest eroding coast in Europe. Climate change is speeding up the erosion, with sea level rise, increased stormy weather and increased heavy rainfall events, all playing their part.

A Lifeguards lookout tower on a beach on the outskirts of Sydney, New South Wales, Australia, Pacific

Magische Saeule, magic column, on the pier in Meersburg on Lake Constance with the Alpstein massif at back during foehn weather conditions, Baden-Wuerttemberg, Germany, Europe

Remains of old jetty at Lake Constance with the peak of Mt Saentis, Alpstein massif, at back during foehn weather conditions, Baden-Wuerttemberg, Germany, Europe

Sign with Feldbergturm Tower on Mt Feldberg, southern Black Forest, Baden-Wuerttemberg, Germany, Europe

Signpost at Millstream Chichester National Park Pilbara region western australia WA

Sledders on Mt. Wallenberg, Bavarian Alps, Upper Bavaria, Bavaria, Germany, Europe

Signpost above the clouds on the rim of the Volcano de Taburiente, La Palma, Canaray Islands, Spain, Europe

Spain, Catalonia, Barcelona, Playa de St Sebastia, Barceloneta Beach, Empty Lifeguard lookoput station.