From grand castles to resplendent cathedrals, Tallinn’s Old Town neighborhood, a UNESCO World Heritage Site, is the perfect place to begin exploring. Enter through Viru Väravad, or Viru Gate, the former fortress whose remaining two towers beckon you into the heart of the city.

La Paz is Bolivia’s administrative capital, a city that clings to the walls of a canyon, rising from 3,600 meters to over 4,000 meters above sea level. That dramatic geography means it holds the title of the highest capital city in the world. From the crowded streets of the valley floor to the windswept plateau of El Alto, La Paz is a city of striking contrasts.

Fiji, a tropical haven in the heart of the South Pacific, is made up of over 330 islands, each with its own distinct character. The islands boast lush rainforests, soaring mountains, and white sandy beaches, offering a wide range of activities, from kayaking through calm lagoons and paddleboarding along scenic coastlines to zip-lining through lush rainforests and hiking across mountainous terrain.

The Ionian Sea, a stretch of the Mediterranean nestled between Italy and Greece, offers a captivating blend of azure waters, picturesque islands, and rich history. The sea is framed by Italy's western coast and Greece's western islands, including Corfu, Kefalonia, and Zakynthos. These islands provide a gateway to some of the most stunning landscapes in the region, from the rugged cliffs of Zakynthos to the lush greenery of Kefalonia.

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.