Hi Stephanie,
Think you would find lots to interest you and youngsters in London.
The Tower of London is quite unique and worth a visit and just over the London Bridge on the other side of the Thames and walking distance from the tower is the London Dungeons (
www.the dungeons.com). Most children love the science museum strangly enough as it has interactive things they can take part in. Would recommend a trip on the London Eye. Have only done it at night and it was spectacular. Waiting for the change to do it daytime as well. Most places on the Thames can be visited by boat (
www.citycruises.com) and they go right down to Greenwich where you can visit the Maritime museum and cutty sark. Buckingham palace will be closed in June but the Royal Mews are open (as far as I can find out) with the state carriages including the Gold State coach.
Dont forget if you have time to spend search out Peter Pan statue - it really did come from here.
We stayed a couple of nights in Paris with our young grandchildren the other year prior to our flight to St. Maarten but to be honest apart from the Eifel Tower there was not a lot for them. We did a river trip and there are many art galleries. Also
Disneyland but to be honest have been told it is not worth the visit after going to the "real thing" in your country. Never been myself prefer to come to your country to do that so it is only hearsay.
Late June you should get some good weather - where are you flying out from and planning on staying? If it is Heathrow then I would recommend Windsor and the castle. Just trying to think of things that are unique to our country.
If I can help any more please ask and I will see what I can find out for you.
Hear that the excursions for the med will be announced in december - will be interesting to see what there is and what prices they are.
Brenda