Guest from the Lindblad Expedition ship National Geographic Explorer holding up a block of ice in the Svalbard Archipelago, Norway, Arctic, Europe

Swimming pool of Dar Tantora The House Hotel, a renovated original mudbrick village in the oasis of AlUla, Medina Province, Saudi Arabia

Guest from the Lindblad Expedition ship National Geographic Explorer licking ice in the Svalbard Archipelago, Norway, Arctic, Europe

Two women riding horses (Equus ferus caballus) traveling through the grass near a hill at the Gabus Game Ranch at sunset; Otavi, Otjozondjupa, Namibia

Woman riding horse (Equus ferus caballus) through the bush on the savanna at the Gabus Game Ranch; Otavi, Otjozondjupa, Namibia

View taken from behind of a safari guide and women travelers standing in a parked jeep talking and looking out onto the savanna with binoculars on the Gabus Game Ranch at sunrise; Otavi, Otjozondjupa, Namibia

Two women on horseback (Equus ferus caballus) smiling at the camera and standing near a dead tree in the brush on the savanna at the Gabus Game Ranch; Otavi, Otjozondjupa, Namibia

Woman sitting in sunlit jeep using binoculars on safari at the Gabus Game Ranch; Otavi, Otjozondjupa, Namibia

Two women riding horses (Equus ferus caballus) on a dirt road traveling through the bush at the Gabus Game Ranch with a southern giraffe (Giraffa camelopardalis angolensis) in the background; Otavi, Otjozondjupa, Namibia

View taken from behind of two women riding horses following a Southern giraffe (Giraffa camelopardalis angolensis) through the bush at the Gabus Game Ranch; Otavi, Otjozondjupa, Namibia

Woman riding horse (Equus ferus caballus) on a dirt road through the bush on the savanna looking at the camera and smiling at the Gabus Game Ranch; Otavi, Otjozondjupa, Namibia

View taken from behind of two women riding horses (Equus ferus caballus) traveling past acacia tree through the bush towards the hills at the Gabus Game Ranch at sunset; Otavi, Otjozondjupa, Namibia

Two women riding horses (Equus ferus caballus) traveling past acacia tree through the bush at the Gabus Game Ranch with mountains in the background at sunset; Otavi, Otjozondjupa, Namibia