This natural reef and its uninhabited islands are home to one of the natural wonders of Belize, the Blue Hole. An underwater shaft that drops from a ten-foot-deep lagoon, it opens into a series of elaborate, stalactite-filled caverns. A true diver's paradise!

Mount Bromo is an active volcano in East Java, located within Bromo Tengger Semeru National Park. Rising to 2,392 meters, it stands inside a vast volcanic caldera surrounded by the Tengger Sea of Sand and several other volcanic peaks. The mountain is part of one of Java’s most distinctive highland landscapes, where dark volcanic terrain contrasts with green hills and open savanna.

Mtskheta is a historic town in central Georgia, located at the meeting point of the Mtkvari and Aragvi rivers, about 20 kilometers northwest of Tbilisi. It served as the ancient capital of the Georgian kingdom of Kartli and remains one of the country's most important religious and cultural centers. The town sits within a landscape of river valleys, wooded hills, and mountain slopes, with historic churches rising above its compact streets.

Nestled along the south bank of the Danube, this historical Austrian city bursts with charm. A favorite stop on European river cruises, the city's most famous attraction is Melk Abbey, which dates back to the 11th century. The original Benedictine structure was lost to fires and foreign invasion, then rebuilt during the 18th century in lavish Baroque style, including a library and inner church covered in magnificent frescoes and gilded fixtures.

Dubuque sits along the Mississippi River in northeastern Iowa, where steep limestone bluffs rise above a broad river corridor. The city is Iowa’s oldest incorporated community and developed around river commerce, lead mining, manufacturing, and trade. Its historic downtown contains preserved brick buildings, churches, shops, restaurants, and the distinctive Town Clock, while the Port of Dubuque provides a more modern riverfront district.