Situated on the coast of South Australia, Adelaide shines as one of Australia’s cultural centers and boasts extraordinary natural beauty throughout.

Oviedo, the capital of Asturias in northern Spain, offers a rare mix of medieval heritage and everyday life that feels rooted rather than staged. The city’s historic center is home to some of the oldest pre-Romanesque buildings in Europe, including the UNESCO-listed Santa María del Naranco and San Miguel de Lillo. Cider, not wine, defines the local table. Oviedo is surrounded by apple orchards, and the traditional drink, sidra natural, is poured from a height by skilled escanciadores.

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.

Must-sees in Seville include the landmark palace Royal Alcázar of Seville, the Gothic, bell-towered Catedral de Sevilla, and Plaza de España, an architectural marvel with Moorish, Baroque and Renaissance influences. Meanwhile, Museo del Baile Flamenco is the place to learn about flamenco dancing culture.

Mist, research stations, and penguins are just a few of the things that define the South Shetland Islands, an archipelago off the coast of Antarctica. These 11 Antarctic islands, most notably King George Island, have served as a base for researchers from Chile, Argentina, and a variety of other countries. The archipelago has also become a popular cruise destination for tourists to the Antarctic region.