All the main sights are within walking distance of each other, but you can catch a bus or the metro for $1.25. A regional day pass is $3. For local transport information see: www.wmata.com

Here are 10 ways to spend an active afternoon in Washington:

1. Bike the Sites on a road bike, mountain bike, tandem or stroller. Or discover DC on a Segway.
   
   
2. Ride the Metrorail system. For the kids, it is a tourist attraction in itself. For general information about Washington see: www.washington.org
   
   
3. Take a cruise from Georgetown Harbour along the Potomac River with Capitol River Cruises.
   
   
4. Travel in an original World War II DUKW amphibious vehicle through the city before splashing into the Potomac River. For details see: www.historictours.com
   
   
5. Accept a secret mission at the International Spy Museum. Nearest metro is Gallery Place.
   
   
6. Smithsonian - the world's largest museum complex - will keep you active for much longer than an afternoon. Entry to the museums is free-of-charge.
   
   
7. Listen to anecdotes on a history tour. For details see www.dcsightseeing.com
   
   
8. Pick up a bargain at the Georgetown Flea Market.
   
   
9. Improve your photography skills on a Washington Photo Safari.
   
   
10. Follow a nature trail through Rock Creek Park and visit its riding stables, tennis courts, picnic areas, art gallery and nature centre.