Where in the World is Rene?

My Favorite Sister spent her last day stateside and is leaving in the morning for a new, exciting adventure.  Her first stop is on the other side of the world.  Can you guess where she is going?  Here are some hints:

• It’s the most densely populated city in the world.
• Its name means “fragrant harbor”.
• It boasts a humid, subtropical climate.
• It is one of the world's leading financial centers.
• Know as the place where "East meets West”.
• Where ‘Only mad dogs and Englishmen go out in the midday sun’
• It has more Rolls Royces per person than any other city in the world.
• This place has the most skyscrapers in the world!
  

Over the last few years, Rene has visited Bolivia, Peru, Mexico, Costa Rica, US, Canada, Italy, Monaco, Switzerland, Austria, France, Germany, Denmark, England, and Wales.

You can read about some of her former adventures here.