[填空题]The Lure of a Big City Vacation [From the Tower of London to Paris’ Eiffel Tower, historic landmarks and one-of-a-kind attractions have long lured travelers to the world’s great cities.] "It becomes, at least for some people, a kind of pilgrimage in the sense that you want to finally see the Statue of Liberty and it’s in New York and you have to go to New York to see it," said Witold Rybczynski, a professor of urbanism at The Wharton School of the University of Pennsylvania. "There isn’t a second version of it anywhere else." This sort of unique attraction, combined with the excitement d city life and a concentration of cultural opportunities, fine dining, shopping and accommodations brings some visitors back again and again. "There’s such a vast range of riches in a small, pretty easily navigated space. That’s definitely what attracts me to cities," said Don George, global travel editor for Lonely Planet Publications. Few large cities h