Hillingdon is the second largest London borough and is just 14 miles away from central London and thanks to the presence of Heathrow airport Hillingdon is regarded as a gateway to the United Kingdom. Visitors arriving in this place will be pleased to know there are a number of things to do and places to visit in Hillingdon. The abundance of local parks, rivers, canals, and are just a few attractions that can be explored by people.