It only took Shenzhen 30 years to go from a little-known fishing village to an international metropolis. The expanding economy and countless opportunities attract people from all over the country to this young and dynamic city. With people flooding in, this tech hub has become a melting pot of various local cultures and the showcase of a younger China. Although Shenzhen doesn't have much historic heritage to speak of, it is certainly one of the most modern Chinese cities with great infrastructure.

Situated at the crossroads of three great rivers – the Mekong, Tonle Sap, and Bassac – Phnom Penh is the heart of a country steeped in tradition, overflowing with rice paddies, jungles, and rural communities. Once a sleepy backwater, Phnom Penh, now, buzzes with commercial activity as the country develops after years of isolation. Old French colonial mansions stand alongside newly emerging designs, which make the city’s mixed architecture and communities fascinating to explore.

Manila, the capital of the Philippines, is one of Asia's best-kept secrets. As the capital of the only predominantly Catholic country in the Orient, it presents a unique blend that feels slightly out of place, yet vibrantly infused with Latin American and Caribbean influences. Music and dancing are ubiquitous, and the city's warmth and enthusiasm can easily rival that of Bangkok. Manila's rich history, shaped by centuries under Spanish religious influence and decades of American consumerism, has led to the saying that the city spent "400 years in a convent and 50 in Hollywood".

Also known as the City by the Bay, San Francisco is diverse, colorful and vibrant. Famous for its steep hills, Victorian houses, year-round fog, beautiful panoramic vistas and excellent cuisine, the city attracts tens of millions of visitors every year. San Francisco is enormous yet pedestrian friendly, and the famous cable cars whisk you away towards new adventures. Its eclectic mix of architecture, sandy beaches, ethnic and cultural diversity make San Francisco a great choice for a vacation.

San Juan is the vibrant, cosmopolitan capital of the island of Puerto Rico. Encompassing hundreds of years of history, the city blends Spanish-era historic sites, such as the San Felipe del Morro fortress, with modern entertainment and fashionable shopping districts. More than a million people call San Juan home, while hundreds of thousands of tourists call it their favorite place to vacation each year.