If you mean runways, there are three.
Heathrow has 2 runways which run east-west and a few years ago there was a debate as to whether a third runway should be built.
Heathrow Airport has two parallel runways that serve as its landing fields. While there is ongoing discussion about expanding capacity, as of now, the airport operates primarily with these two runways to accommodate incoming and outgoing flights.
You need to quote a destination
There are many criteria by which to measure the "size" of airports. Passengers embarked, aircraft movements, runways, domestic vs. international passengers, etc., but the use of the term "bigger" implies physical size, and in that respect, Heathrow has a slight edge over O'hare by about eight tenths of a square mile. On the other hand, O'hare has some seven runways to Heathrow's two. Heathrow is bigger in terms of people coming there and O'hare is bigger in terms of flights connecting.
Some are.. check out Heathrow. Also, wind direction can effect the direction of landing for some planes.
Construction of runways began in 1944, and London Heathrow Airport was made available for full civil use on May 31, 1946.
There is no direct service between Dover and Heathrow. You will need to change in London so should allow AT LEAST three hours.
flight time from heathrow to Singapore
heathrow to luxor takes 3 hours
You can't use a boat from Heathrow. It's an AIRport.
There are many hotels near Heathrow that offer long term parking. Some examples to consider are: the Sheraton Heathrow Hotel, the Holiday Inn London- Heathrow, and the Radisson Blu Edwardian Hotel.