Among the new properties opening this year is a Bulgari Hotel and Residences in Knightsbridge, an exclusive district in west London.

WSJ: How to Make Last-Minute Plans for the London Olympics

And if you hanker after something truly different, Prado y Neptuno is a boutique cigar and cocktail spot in the exclusive Recoleta district.

BBC: Cocktailing in the Argentine capital

Out by the Chao Phraya River, the 39-villa Siam hotel is spread over three acres in the exclusive northern Dusit district.

BBC: Business trip: Bangkok