Sequoia National Park, located in California’s Sierra Nevada mountains, is a natural wonderland famous for its giant sequoia trees, including the world-renowned General Sherman Tree. Standing at an astonishing 275 feet tall, the General Sherman is the largest tree on Earth by volume and a must-see for visitors.

Located off the coast of Ecuador, Floreana Island is one of the Galápagos Islands and a popular stop for gazing at a variety of wildlife, including Galápagos tortoises and flamingoes. Post Office Bay is home to the island chain's first post office site, originally established by visiting whalers in the 18th century. Though one of the smallest islands in the Galápagos, Floreana is well worth the trip!

Keauhou, located on the Kona Coast of Hawai‘i Island, is recognized as the birthplace of King Kamehameha III, and many nearby sites still reflect its royal past.

You'll know why picturesque Grenada is known as the "spice island" when you notice the scent of nutmeg, vanilla and cocoa in the air. Grenada's waterfalls, lush rain forests, volcanic crater lake, tiny villages, cocoa, nutmeg and banana plantations, rum distilleries, scenic hiking trips, pristine coral reefs, and hidden-away unspoiled beaches all make Grenada one of the most popular ecotourism destinations for those who like to discover off-the-beaten-track natural beauty and charm.

Golubac is a gateway to the Iron Gates Gorge, a stretch of the Danube River that separates the Carpathian and Balkan mountains.