Take an evening ride on the London Eye for a gorgeous view of the city.
Climb the many circular steps inside the Duomo. A bit of a nerve-racking climb but well worth the view when you get to the top.
Take the elevators (or the stairs if you’re feeling in shape) to the top of the Eiffel Tower and look over the Champ de Mars.
4. Hong Kong
Take the tram up to Victoria Peak. I went on a foggy day but on a clear day you can see across the water for a view of both sides of the city.
5. New York City
The Empire State Building is the most famous viewing spot from the sky in NYC but if you want to save some time and money check out one of the many rooftop bars.