A London Travelcard is an excellent way to see the sights of London and offers unlimited travel in the Zones it's applicable to.
Two types of London Travelcards are available; Off-Peak (valid after 09.30 Monday to Friday and all day on Saturdays, Sundays and public holidays) or Anytime (no travel time restrictions) are valid on all train, underground, DLR (Docklands Light Railway), Tramlink and bus services within the Zones of validity (for bus travel, they're valid throughout the Greater London Area, no matter which Travelcard you purchase).
If you're travelling into London for the day, you may be able to buy a train ticket with an integrated Travelcard. If it is available with your ticket, it will appear in the journey planner as 'London All Zones Travelcard'. Select this, rather than the station you'll be arriving at (eg. London St Pancras). You can travel into any London station and travel around the capital as you wish, on your day of travel. Please note, if you are not returning on the same day, you will need to buy a Travelcard separately.
Otherwise, you can buy your Travelcard on the 'Travel Options' page.
London Travelcard prices start from £7.30 for a Zones 1 & 2 Off-peak Travelcard (£8.00 for Zones 1-4 and £8.90 for a 'Zones 1 to 6' Off-peak Travelcard), and can be purchased as an add-on to many rail tickets.
If you're starting your journey from within the Network South East area (see map with London Zones - opens in a new window), you'll often be able to get a Travelcard included within the train ticket, for a much better price than buying it separately.
Cambridge - London Adult Off-Peak Day Travelcard valid on Greater Anglia (formerly National Express East Anglia) costs £23.80 - saving £4.90 compared to buying a Off-Peak Day Return (£19.80) then a Travelcard (£8.90) separately
Guildford - London Adult Standard Class Anytime Day Travelcard costs £30.00 - saving £9.20 compared to buying an Anytime Day Return (£21.90) and Anytime Day Travelcard (£16.40) separately
National Railcard discounts also apply to Travelcards.
The six Zones of London cover an enormous area stretching from Heathrow Airport in the west to Upminster in the east, from Enfield in the north to Croydon in the south - and a Zones 1-6 Travelcard is valid for unlimited journeys by train, underground, bus, DLR and Tramlink throughout this area.
Almost all the sights of London are within Zone 1 - immediately accessible from any London rail terminus - and we've listed some more great places to visit below.
London Travelcards also offer fantastic discounts for kids:
Up to 4 children aged 11-15 inclusive can travel for just £1 each when they accompany an Adult Railcard holder
Children under 11 can travel free with an Oyster Photocard (available free) - find out more at Transport for London's website
For great places to go with your travelcard see our Things to do in London section.
Did you know that a London Travelcard can get you to:
Hampton Court Palace (Zone 6, adjacent to Hampton Court station with direct trains from London Waterloo)
Historic Greenwich and the Cutty Sark (Zone 2 / 3 boundary served by both Greenwich station with direct trains from London Bridge and Cutty Sark for Maritime Greenwich on the DLR)
Kew Gardens on the Zone 3 / 4 Boundary - served by District Line and London Overground services to Kew Gardens station
Kingston in Zone 6 - great shopping and riverside location
Wembley Stadium in Zone 4 - right next to Wembley Stadium station (with direct services to London Marylebone) and Wembley Central on the Bakerloo line