In Edinburgh, an ancient fortress looms, the hills are steep, and travelers delight in the hidden charms of the Old Town and New Town. Hike to find spectacular views on Arthur's Seat, shop the downhill streets of the Royal Mile, and visit Edinburgh Castle, an imposing royal fortress that defines this city's skyline.

Katmai National Park and Preserve lies along Alaska’s remote Pacific coast, shaped by volcanism, glaciers, and deep time. The area gained prominence after the 1912 Novarupta eruption, one of the largest volcanic events of the 20th century, which transformed the landscape and led to the creation of the Valley of Ten Thousand Smokes.

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.

Replete with windmills and old-world charm, the village of Kinderdijk lies east of Rotterdam on the Lek River and is a popular stop for European river cruises. Home to the largest concentration of old windmills in the Netherlands, Kinderdijk was designated a UNESCO World Heritage Site in 1997.

The southernmost island in the crescent-shaped Comoros archipelago. Encircled by a barrier reef, Mayotte is blessed with one of the world's perfect lagoons. In its lush forests, the fragrant yellow flowers of the ylang-ylang tree are picked to extract their perfumed oil. Against a backdrop of waterfalls and volcanic peaks on Mayotte, there is a feeling of rural tranquility.