Travelers on the Arabian Sea often find themselves in Muscat, on the Gulf of Oman. This port capital is situated between ocean and mountains, and boasts lovely beaches, great diving sites (watch for turtles!), 16th-century forts, and the impressive Sultan Qaboos Grand Mosque, which can hold 20,000 people.

Siem Reap is best known as the gateway to Angkor, the ancient capital of the Khmer Empire, but the town itself offers far more than a launching point for temple exploration. Located in northwestern Cambodia, Siem Reap balances centuries-old traditions with a rapidly evolving cultural scene. Its streets are lined with colonial-era buildings, Buddhist pagodas, bustling markets, and open-air cafés.

Ensenada is an enchanting port city on the coast of Baja California, Mexico. Stroll along the harbor on the Malecón Promenade for spectacular panoramic views of the Pacific Ocean, or hit the town for a taste of Ensenada's thrilling night life and delectable local eats.

Copper River, Alaska's fourth largest river travels from the dry interior climate to the temperate rainforest along Prince William Sound.

Istanbul is a city built on layers of empire. Spanning two continents, it was once the capital of three major empires: Roman, Byzantine, and Ottoman. Visitors walking through the Sultanahmet district can witness this timeline firsthand, from the Roman-era Hippodrome to the Byzantine mosaics of Hagia Sophia, and the towering minarets of the Blue Mosque. At nearby Topkapi Palace, rooms still display the jeweled swords, ceremonial robes, and handwritten Qurans once used by Ottoman sultans.