Puerto Rico, an unincorporated territory of the United States, is a Caribbean island rich in history, culture, and natural diversity. Its capital, San Juan, is a vibrant hub where centuries-old Spanish forts, pastel-colored colonial buildings, and lively plazas tell the story of the island’s complex past.

Bar Harbor should be any traveler's Maine priority! Drink in a view of the Atlantic Ocean from the town pier, and be sure to get some lobster at one of the excellent local restaurants. Bar Harbor, a Mount Desert Island town, is also the portal to the rugged, recreational paradise Acadia National Park, where birding, whale-watching and kayaking is the order of the day. The park's Cadillac Mountain is the highest point on America's East Coast.

Golubac, a picturesque town on the banks of the Danube River in Serbia, is a destination known for its rich history and stunning natural beauty. The town is home to the Golubac Fortress, a medieval stronghold dating back to the 14th century, which offers stunning views of the Danube and the surrounding landscapes.

This island in the Gulf of Thailand is known for white sand beaches, lush national parks, and night markets packed with fresh seafood. Visitors can spend mornings snorkeling, afternoons exploring temples, and evenings tasting local fish sauce, one of the island’s specialties.

Stretching across central Oman, the Wahiba Sands offer a dramatic desert landscape of rolling dunes that shift in color with the changing light. This vast sea of sand is home to towering ridges and open plains, creating an otherworldly backdrop for exploration.