Phnom Penh, Cambodia’s busy capital, sits at the junction of the Mekong and Tonlé Sap rivers. It was a hub for both the Khmer Empire and French colonialists.

New York City comprises 5 boroughs sitting where the Hudson River meets the Atlantic Ocean. At its core is Manhattan, a densely populated borough that’s among the world’s major commercial, financial and cultural centers. Its iconic sites include skyscrapers such as the Empire State Building and sprawling Central Park. Broadway theater is staged in neon-lit Times Square.