Explore the spectacular Maya ceremonial centers of Mexico's Yucatan—Chichen Itza, Uxmal, Tulum and Coba—and more remote sites such as Labna, Sayil and Mayapan with an expert educational team. Learn about Mayan art, architecture and mathematical and astronomical systems. Visit Merida’s Sunday market and discover the rich natural world of the Maya at the Sian Ka’an Biosphere.

Explore Earth’s last frontier aboard m.s. Le Boreal one of the finest vessels in Antarctica featuring private balconies in 95% of the ocean-view staterooms. Experience fantastically shaped icebergs, turquoise glaciers, bustling penguin rookeries and breaching whales. Join an expedition team of world-class naturalists and board sturdy Zodiac craft for excursions. Enjoy two nights in Buenos Aires. Optional extension to Iguazú Falls.

Join a team of guest speakers, including Peter Hillary, aboard the 57-cabin Caledonian Sky and experience the natural beauty of New Zealand. Visit dynamic Queenstown for two nights. Enjoy up-close access to the towering granite cliffs and tumbling waterfalls of Doubtful and Milford Sounds and remote Stewart Island. Experience Rotorua’s spouting geysers, bubbling mud pools and volcanic crater lakes. Spend time with Maori elders for a welcome ceremony and traditional hangi lunch. Observe some of the world’s rarest birdlife on Ulva Island and walk the beginning of the Queen Charlotte Track.

Discover Vietnam’s captivating beauty and enduring traditions on this 17-day journey. Experience the French-accented capital Hanoi; cruise through scenic Ha Long Bay; visit Da Nang’s acclaimed Cham Museum; explore the colorful village of Hoi An and the imperial capital of Hue.  Explore the Mekong River Delta and bustling Saigon. Optional extension to the temples of Angkor.

Experience Jerusalem, sacred to three major religions. Visit Yad Vashem, a living memorial to the Holocaust. Journey to Masada and float in the Dead Sea. Travel to Bethlehem and Ramallah in the West Bank. Visit a Druze village in the Golan Heights and explore cosmopolitan Tel Aviv.

Walk across Selma’s Edmund Pettus Bridge and through the doors of Little Rock High School. Meet with 16th Street Baptist Church bomb survivor Carolyn McKinstry, Bloody Sunday foot soldier Annie Pearl Avery, and Little Rock Nine member Elizabeth Eckford. Experience the new Memorial for Peace and Social Justice in Montgomery.

Visit Badwater Salt Flats (282 feet below sea level) and enjoy a stunning panoramic view of all 11,049 feet of Telescope Peak. Hike amid surreal sand dune landscapes and between the multi-hued walls of Golden Canyon; experience sunrise at Zabriskie Point; and visit Ubehebe Crater.

This extraordinary 18-day journey reveals the magnificence of four distinct Southern African nations, from Zimbabwe’s spectacular Victoria Falls and Botswana’s exceptional Chobe National Park to Namibia’s massive dunes and storied coast and South Africa’s beautiful Cape Town. Optional 4-day/3-night extension to the extraordinary Kruger region.

Encounter a mélange of culture, religion, art and architecture. Discover the white-marble capital of Ashgabat; explore Nisa and Khiva, both UNESCO sites; watch silk weavers and visit an artisan studio in Bukhara; experience legendary Samarkand; see the world's oldest Quaran in Tashkent; and tour Russian-accented Almaty.

Absorb Croatia’s remarkable history and unspoiled Dalmatian coastline on this captivating 15-day journey. Travel from Zagreb to Ljubljana to charming Opatija and on to beloved Dubrovnik. Enjoy the fascinating history and Mediterranean atmosphere of the alluring Istrian Peninsula. Optional 4-day/3-night extension to the Balkan gem of Montenegro.