Lighthouse, Berlenga Grande Island, Portugal, Europe

Trulli, Rione Monti, UNESCO, Alberobello, Bari, Apulia, Italy

Tomb carved into sandstone rock of Jabal Banat (Qasr Al-Bint) area in site of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia

The archaeological ruins of Pompeii, UNESCO, Campania, Italy

Guzicheng, ancient city of Jinhua City, at night, Zhejiang Province, China

St. David's Battery, UNESCO, four guns installed 1910 by British to defend deep water channel leading to Royal Navy Dockyard and Hamilton, Bermuda

View over the Ilulissat Icefjord, UNESCO World Heritage Site, Western Greenland, Denmark, Polar Regions

Inside a traditional house, Luca Ioan and Elena guesthouse, village of Sibiel, department of Sibiu, Transylvania, Romania

A courtyard fresco in the Roman ruins of Pompeii, UNESCO, Campania, Italy

Aerial of tombs carved in sandstone rock of Jabal Banat (Qasr al-Bint), Hegra (Madain Salih), UNESCO, AlUla area, Medina Province, Saudi Arabia

Welcome sign at the Mesoamerican archaeological site of Lamanai (Submerged Crocodile), Belize

Pathway through heather and sand dunes, Kampen, Sylt, Schleswig Holstein, Germany, Europe

Qasr al Hosn fort, preserved in downtown area, Abu Dhabi, United Arab Emirates, Middle East

Partially renovated old building with a new roof, former Krupp Bliersheimer Colony Villas, factory homes of the Friedrich-Wilhelm-Huette steelworks, Duisburg-Rheinhausen, Ruhr Area, North Rhine-Westphalia, Germany, Europe

Aerial view, former water tower, historical monument, camera obscura, Muelheim an der Ruhr, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe

Pfarrzentrum St. Nikolaus parish center, front, modern religious architecture, architect Prof. Andreas Meck, Neuried, Munich, Bavaria, Germany, Europe

Boardwalk in the Naturschutzgebiet Dosenmoor nature reserve, regenerating and partially preserved bog, Kreis Neumuenster county, Schleswig-Holstein, Germany, Europe

Boardwalk in the Naturschutzgebiet Dosenmoor nature reserve, regenerating and partially preserved bog, Kreis Neumuenster county, Schleswig-Holstein, Germany, Europe

Kunstmuseum Muelheim an der Ruhr, art museum, in the Alte Post building, former postal building, Synagogenplatz square, Muelheim an der Ruhr, Ruhr Area, Germany, Europe, PublicGround

Das Haus zum Walfisch historical building, Freiburg, Baden-Wuerttemberg, Germany, Europe

Synagogenplatz square, Kunstmuseum Muelheim an der Ruhr, art museum, in the Alte Post building, former postal building, listed building, Muelheim an der Ruhr, Ruhr Area, North Rhine-Westphalia, Germany, Europe, PublicGround

Grugaturm tower and restaurant in the Grugapark park, Essen, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

Kunstmuseum Muelheim an der Ruhr, art museum, in the Alte Post building, former postal building, listed building, Synagogenplatz square, Muelheim an der Ruhr, Ruhr Area, Germany, Europe, PublicGround

Aerial photo, Dortmund U, downtown Dortmund, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

Grugaturm tower in the Grugapark park, Essen, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe

Hiking trail through Snow Canyon, with circles of stones in a meeting area behind the Red Mountain Spa, with meditation maze and Snow Canyon Mountain Range in the background. Red Cliffs Desert Reserve around St George Town with rock cliffs and dark clouds in a blue sky, St George, Utah, United States of America

Hiking trail through Snow Canyon, with circles of stones in a meeting area behind the Red Mountain Spa, with meditation maze and Snow Canyon Mountain Range in the background. Red Cliffs Desert Reserve around St George Town with bright sunburst in a blue sky, St George, Utah, United States of America

Hiking trail through Snow Canyon, with circles of stones in a meeting area behind the Red Mountain Spa, with meditation maze and Snow Canyon Mountain Range in the background. Red Cliffs Desert Reserve around St George Town with rock cliffs and dark clouds in a blue sky, St George, Utah, United States of America