The Darvaza Gas Crater, famously nicknamed the “Door to Hell,” is one of Turkmenistan’s most extraordinary landmarks. Located deep in the Karakum Desert, this fiery pit has been burning continuously since the early 1970s, when Soviet engineers reportedly set fire to a collapsed natural gas field to prevent the spread of methane.

Brasília may be a World Heritage Site, but it is only of interest to town planning and architecture students, and those keen to witness the folly of man on a metropolitan scale. It must have looked good on paper, and still looks good in photos, but in the flesh, forget it. Designed by architect Oscar Niemeyer, urban planner Lucio Costa, and landscape architect Burle Marx, the city was built in an incredible three years between 1957 and 1960.

Majunga, officially known as Mahajanga, is a picturesque coastal city in northwestern Madagascar that invites travelers with its vibrant culture and serene beauty. Situated along the Mozambique Channel, this port city is a gateway to some of Madagascar’s most stunning beaches and marine reserves. The city's palm-lined promenade, known as the Avenue of the Baobabs, is a local favorite, offering breathtaking views of the sunset over the ocean.

Kodiak Island's primary city, Kodiak is among seven communities on the island. All transportation, whether by ferryboat or aircraft, goes through here.

St. Vincent & the Grenadines is a Caribbean nation that feels both adventurous and serene, a chain of lush islands and tiny cays scattered across turquoise waters. The main island of St. Vincent is dominated by volcanic landscapes, including the active La Soufrière volcano, whose slopes are covered in rainforest and dotted with waterfalls.