Portobello Road Market

 If you visit London one of the "must-do" is definately visiting Portobello Road Market.
 Portobello Road is a street in Notting Hill, in west London. Until 1740 it was known as Green's Lane. Portobello Road Market is now one of the most famous tourist destinations in London. But not many people realise that it was originally a farm named after Puerto Bello located in Caribbean - it was a town captured by Admiral Vernon in 1739.  

Sources:

https://en.wikipedia.org/wiki/Portobello_Road

http://portobellomarket.org/history