A warning sign stating that the road can be closed seasonally, Coconino National Forest, Arizona, United States of America

A warning sign at the start of the Hermit Canyon Trail stating that getting to the bottom is optional, but getting back to the top is mandatory, Grand Canyon, Arizona, United States of America, North America

Sign stating that bikes are not allowed beyond this point at Hermits Rest, Grand Canyon, Arizona, United States of America, North America

Tourists walk past souvenir tee shirt stating I have climbed up the The Great Wall, in Mutianyu, north of Beijing

Cheetas scent marking their territory, Moremi, Botswana, Southern Africa

The Da Gama padrao, a monument to Vasco Da Gama in the Cape Point Nature Reserve in South Africa. Da Gama was a Portuguese sailor/explorer and led expeditions from the Cape to the East in 1497. A padrao is a limestone pillar bearing the Portuguese coat of arms and an inscription stating when and by whom it was raised. The cross signified Portuguese sovereignty and Christianity.

Traffic sign stating 'speed limit infinity' at barham boulevard freeway entrance, Los angeles california united states of america

Memorial stating 'For ever let this place be a cry of despair and a warning to Humanity, where the Nazis murdered about one and a half million men, women and children, mainly Jews from various countries of Europe' at the Auschwitz-Birkenau Concentration Camp, Oswiecim, Malopolska, Poland