Wanna take my kids for a spectacular year end holiday. Price is not an issue. Looking for novel ideas.

I have always felt that London is the perfect holiday destination for families. If your kids are into Harry Potter, you can opt for the package at Georgian house hotel which includes a walking tour of London landmarks featured in the Harry Potter films, as well as a 'Making of Harry Potter Tour' at the Warner Bros Studio, a short bus ride away. Inside the rooms themselves, guests will find spell books, potion bottles, cauldrons and trunks, along with authentic gothic interior finishes. Staff even light candles and play music as visitors walk into their special suites. The wizard chamber is £249, or £363 with the studio tour. If your kids are Jurassic park fans, then you can stay at the National history museum. The museum allows kids aged 7-11 stay next to T. rex and his friends for the night. They just need to bring their sleeping bag for the night. It costs $232 per child and $60 for accompanying adults. If your kids like toys, then they can participate in the hamlets dream sleepover. Every Saturday they let kids aged 5-11 take over the entire 7 floor of toys store over for the night. (You need to bring sleeping backs as well)