Young woman watching from Senillosa observation post in the Nature reserve of Els Aiguamolls de Emporda, Costa Brava, Catalonia, Spain, Europe

Striated caracara (Phalcoboenus australis) on New Island in the Falkland Island

Bruges, Belgium – Architectural detail of the Belfry of Bruges, a medieval tower in the city center. A historic symbol, it once housed a treasury, municipal archives, and served as an observation post.

Bruges, Belgium – Architectural detail of the Belfry of Bruges, a medieval tower in the city center. A historic symbol, it once housed a treasury, municipal archives, and served as an observation post.

Climbing to an observation post over the forest canopy, French Guiana, Overseas department and region of France, French Guiana, South America

Buzzard (Buteo buteo), captive, United Kingdom, Europe

Barn owl (Tyto alba), captive, United Kingdom, Europe

Lighthouse at Happisburgh, Norfolk coast, United Kingdom

Lighthouse at Happisburgh, Norfolk coast, United Kingdom

Snowy owl (Bubo scandiacus) female perched on a pole and watching.

Mount Grossglockner, 3798 metres, with the Wilhelm Swarovski Observation Post and the Pasterze Glacier, glacier tongue, Hohe Tauern National Park, Carinthia, Austria, Europe

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

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

Security cameras on lamp post