Greater London is a term used to describe the entire city of London, which includes the outer suburbs and boroughs that are linked to the central city. Typically, when one talks of 'London' they are referring to central London - an area in the middle of Greater London that comprises of Zones 1 to 3 on the transport map. Often cited as one of the oldest and one the greatest cities in the modern world, London is a hot-spot for tourists. Part of what makes London so fantastic is its diversity in all forms of its identity - from the people, to the food, to the entertainment that is on offer for tourists and locals alike. Despite being a melting pot of cultural diversity, London is still very much its own city, with a uniquely British identity - thanks in part - to the historic architecture that can be found all around.
Of course, like any major city, most of the action happens in the center of the city. London is no different, and is packed full of unique towns and districts that connect to one another in a very efficient manner. Visiting the historic attractions (such as Trafalgar Square) should be ticked off the list, but a short tube trip from there will find a visitor in the heart of Chinatown - a place full of delicious cuisine, and riveting entertainment. Central London is well documented, and there are many useful guides to help visitors get the most out of their visit. However, given the relatively compact nature of central London, some do feel that it's often easier and more rewarding to simply get off at random tube stops and explore, as there is always something to see, eat or do within zone 1.
The London Underground is incredibly efficient, and while it can become somewhat crowded and stressful during rush hour, the trains come fairly rapidly and are easy to understand. Traveling within the central zones is fairly straightforward using the color-coded map. However, if one is wishing to visit the outer areas of London, it may be necessary to transition to an overground train which carries different pricing implications in some cases, and is generally a little trickier. The staff at most stations are very helpful and should be able to assist in getting from A to B.
Everybody loves to eat, and it's very easy to find delicious food in London. The British have a long history of enjoying Indian cuisine, and so it's relatively easy to find an authentic Indian takeaway (or dine-in restaurant) in London. Like many other places, Chinese food is also very popular in London. American visitors shouldn't have a hard time finding traditional American food such as burgers and milkshakes, although they are advised to avoid certain chain restaurants in central London that exist solely to overprice food for American tourists.
London is a wonderful city that is setup to entice the curious - those that love to explore will find a goldmine of opportunity in the city. Even when traveling off the beaten path and entering into Zones 3 to 5, there is a lot of interesting art galleries, restaurants and natural attractions.