Starry night sky over a volcanic landscape with a colorful twilight gradient in Tenerife, Canary Islands, Spain, Atlantic, Europe

Blue hour sunrise on the Strait of Gibraltar crossing from Spain to Morocco, Gibraltar

Sunset at the resort island of Nan'ao Island, Shantou City, Guangdong Province, China

Early Morning Sunrise, West Mitten Butte, Monument Valley Navajo Tribal Park, Utah, United States of America

Apennines at blue hour, Gubbio, Umbria, Italy

Sunset near Ponta Delgada, Sao Miguel, Azores Islands, Atlantic, Portugal

Abstract details of orange slot canyon wall, Antelope Canyon X, Page, Arizona, United States of America, North America

Slot canyon walls, Antelope Canyon X, Page, Arizona, United States of America, North America

San Francisco Cable Car stops to allow passengers to board, California, United States of America

Baldwin Street, the world's steepest residential road with an average gradient of 1 in 5 and 350 metres long, Dunedin, Otago, South Island, New Zealand, Pacific

Tourists at Baldwin Street, the world's steepest residential road with an average gradient of 1 in 5 and 350 metres long, Dunedin, Otago, South Island, New Zealand, Pacific

San Francisco Cable Car, California, United States of America

Logo of the Bayer AG, a German chemical and pharmaceutical company

Gradient of colors in a beautiful sunset from a top of a mountain

Facade, modern office building Cologne Oval Offices, Gustav-Heinemann-Ufer, Bayenthal district, Cologne, North Rhine-Westphalia, Germany, Europe

Facade, modern office building Cologne Oval Offices, Gustav-Heinemann-Ufer, Bayenthal district, Cologne, North Rhine-Westphalia, Germany, Europe

Facade, modern office building Cologne Oval Offices, Gustav-Heinemann-Ufer, Bayenthal district, Cologne, North Rhine-Westphalia, Germany, Europe

A single person on the beach, Playa de Las Teresitas, San Andres, Santa Cruz de Tenerife, Tenerife, Spain, Europe