More than 300 days of sunshine annually (more than San Diego or Miami Beach) earns Denver high marks with visitors and make sunglasses a must. For the city's most energetic shopping, dining and entertainment spots, point your compass in the direction of Larimer Square, the Tivoli, LoDo and the 16th Street Mall.

Havana, Cuba's vibrant capital, is a city where the past and present coalesce to create an unforgettable travel experience. Walking through Old Havana (La Habana Vieja), a UNESCO World Heritage site, feels like stepping back in time. The cobblestone streets are lined with pastel-colored colonial buildings, baroque churches, and iconic plazas, such as Plaza de la Catedral and Plaza Vieja, each with its own unique charm and history.

Ol Doinyo Lengai, often called the "Mountain of God," is an active volcano located in northern Tanzania and is a must-visit for adventurous travelers. Towering over the Great Rift Valley, this majestic peak is unique due to its lava composition. Unlike most volcanoes that produce molten lava, Ol Doinyo Lengai emits natrocarbonatite lava, which is unusually cool and flows like water. This rare phenomenon makes it one of the most intriguing volcanic landscapes on Earth.

Pilsen, located in the western part of the Czech Republic, is renowned for its rich history and vibrant cultural scene. The city is best known as the birthplace of Pilsner beer, a name synonymous with the iconic pale lager that has become a global standard.

Aruba's consistent sunny weather and gentle trade winds make it an ideal destination for beach lovers and water sports enthusiasts.