Hello, our daughter is going to arrive in London 2 weeks before her 21st birthday. She loves art, history, and traveling, and plans to be there a full semester. this will be her second trip there...she didn't leave London much last time as there were so many amazing things to do, but this time she plans to do some day trips to other countries. She isn't a big drinker ....what would the locals suggest??? I would love to buy her a gift certificate or pass or ticket before she leaves....ideas?