palmtreegirl said:
Do you think we should just do a week in London and then a week in Paris?
I wouldn't suggest it! I would spend "most" of my time in England, with perhaps a visit north to Edinburgh as someone suggested. A "two-night/three-day" visit to Paris would suffice. You could do a day-visit to DLP, and then tour the City on another.
Sorry, but during a recent visit to England (three+ weeks) I spent four nights in Paris, which was about three nights too many! I was never happier, than when the Eurostar pulled BACK into England!! Paris, can be enjoyed in one/two days (the City sights). I know your kids would love the hop-on, hop-off bus tours, providing the opportunity to take in the places they truly wanted to see (using this manner of transport). I agree...walking the "Champs" is a lot of fun, and a must do/see (up to the "L'arc de triumphe" at the top). The Eiffel tower is also a #1 tourist "to-do" attraction.
The french drivers are crazy, and the place not as welcome/warm as England. I do not wish to delve into this...but for us it proved true.

We all speak some French, which helped a teeny bit (Nationals respond best to natives fluent in French, but can discern the American "inflection" immediately).
alisonbestford mentioned the 'Jorvik Museum' (Viking museum) in York. My daughter is currently attending the University of York, and the city is extremely RICH in both VIKING and ROMAN history! The city itself is completely "walled" in (ancient walls), and has one of the oldest churches in all of Europe (at least the stained glass is the oldest!). "The York Minster" (which took more than 250 years to complete) is a tremendous monument to see. It's also one of the most haunted cities in Europe.
The "Dungeons" of York, London, etc.--are also fun and fascinating.
http://www.thedungeons.com/
There are actually "castles" you can stay in all over Europe, (some real beauties in England). In Whitby, you can see the famous ruins of the "Abbey" where "Dracula" reportedly lived (the Abbey was featured in the filming of the movie). Braham Stoker lived in Whitby while writing this literary classic. My daughter recently visited at Halloween, for the annual "Carnival of souls" (where a strange "pilgrimmage" of sorts takes place, dominating the usually quiet City).
http://www.faculty.de.gcsu.edu/~dvess/ids/medieval/whitby/whitby.shtml
There are proper theme parks scattered all about England, with some truly enjoyable water parks as well. I agree with visiting Harrods, as the store is a modern-day marvel. Also, Hamley's toy store is one not to miss. It's the biggest toy store in the UK, and your kids would love the place.
http://www.hamleys.com/
Most places you are interested in seeing may be easily researched in advance using the web.
The "LONDON EYE" is a wonderful tourist attraction. We have taken a couple of flights, and enjoyed each tremendously.
The Famous London TOWER and the "CEREMONY OF THE KEYS" is also worth noting. The ceremony is FREE, but tickets must be obtained in advance by writing. The address and info can be found here:
http://europeforvisitors.com/europe/countries/uk/tower-of-london-ceremony-of-the-keys.htm
Read on for info regarding the crown jewels, and the infamous RAVENS of the Tower (Legend dictates that, if the ravens ever leave, the Tower will fall and the Kingdom will fall, so Charles II decreed that there must always be at least six ravens at the Tower). That tradition has been honored for more than 300 years. To keep the Ravens from leaving, their wings are actually "clipped" (flying feathers).
I too...second the motion for investing in some "RICK STEVES" books from your local bookstore. England for dummies, or even Paris for Dummies is also a fun/good read.
Ireland is accessible too...easily from the coast of England (by ferry or plane).
www.Ryanair.com is a great cite for inexpensive flights in/around the UK. Some of the fares are ridiculously LOW (like a couple of pounds!). It's worth checking into, and seemed to be a favorite with many of the people we chatted with about the towns/Cities.
There is truly so much to do/see in the UK and across Europe. Two weeks is sufficient time to just scrape the surface. You will need to plan well, to insure your time is well-used.
Enjoy your planning!
