Nestled on the banks of the Danube River, Vidin, Bulgaria, is a city where history and scenic beauty converge. This ancient city, known for its well-preserved medieval fortress, the Baba Vida Castle, offers a unique glimpse into Bulgaria's past. The fortress, dating back to the 10th century, stands as one of the best-preserved medieval fortifications in the country.

A lesser-known river port in the Mekong Delta, Sa Dec was once the capital of Dong Thap province of southern Vietnam. Today, it is best known for its flower gardens and authentic bustling market. The city is also famous as the setting for French writer Marguerite Duras' 1984 novel, The Lover, and its 1991 film adaptation of the same name.

Most people visit Gallipoli for the chilling, contemplative sites of Anzac Cove and Lone Pine Cemetery. To honor the 500,000 soldiers who lost their lives at battle here, this peninsula was made into a National Park.

Abilene is no-nonsense and traditional, but it's just as capable of having a good time as any rip-roaring cowpoke. When you're in Abilene, take time to see the Abilene Zoo, particularly the Texas Plains exhibit, a unique collection of species native to that part of the country (if you've never seen a javelina, here's your chance).

Sioux Falls is South Dakota’s largest city, located in the southeastern part of the state along the Big Sioux River. The river is central to the city’s landscape, most notably where it passes over a series of pink quartzite ledges at Falls Park. Around the urban area, the terrain opens into the broad prairie of the Great Plains, with farmland and gently rolling countryside extending beyond the city.