很高兴为您
to travel和travelling都正确
like to do 和like doing：两个短语无大区别,可以互换使用.但like doing 泛指“喜欢做某事”；like to do 特指“喜欢做某事”,着重指具体行为.
I like playing football,but I like to play basketball today.
我喜欢踢足球,但今天我想打篮球.