Crowds walk down Las Ramblas boulevard in Barcelona, Spain, May 7, 2002. Las Ramblas, the Catalan capital's favorite street, is a pedestrian boulevard that cuts through the heart of the old quarter and is full of activity day and night. DENIS DOYLE / ASSOCIATED PRESS

Shoppers scurry past Chicago's landmark stone water tower, a survivor of the great fire of 1871, along the City's "Magnificent Mile" Thursday, Dec. 2, 2004 in Chicago. The holidays are a great time to revel in Chicago's storied collection, embrace its history and enjoy its seasonal displays. JEFF ROBERSON / ASSOCIATED PRESS

Pedestrians pass by Thoumieux, the Paris brasserie located near the Eiffel Tower, one of the French capital's best-known sights. The restaurant, founded in 1923 and still run by the same family, is beloved by the locals for its reliable quality and just plain good food. MICHEL EULER / ASSOCIATED PRESS

This undated photo released by Norm Goldstein shows a book store in Hay-on-Wye in Wales. Norm Goldstein / ASSOCIATED PRESS

This Wednesday, June 1, 2011 photo shows the Shakespeare and Company in Paris. Spend a day, and a de rigeur night, here and you can walk hand-in-hand with Woody Allen through the City of Light he portrays in "Midnight in Paris," his sweet and zany Valentine to the French capital. In an instant anyone can amble down the 21st-century streets of this walking city. Remy de la Mauviniere / ASSOCIATED PRESS

BERLIN, GERMANY - DECEMBER 30: The Friedrichstrasse, one of the city's main shopping streets, is pictured on December 30, 2011 in Berlin, Germany. Andreas Rentz / Getty Images

BARCELONA, SPAIN - MARCH 20: People stroll over Las Ramblas on March 20, 2009 in Barcelona, Spain. Jasper Juinen / Getty Images

BARCELONA, SPAIN - MARCH 20: People pass flower market stalls while strolling over Las Ramblas on March 20, 2009 in Barcelona, Spain. Jasper Juinen / Getty Images

PARK CITY, UT - JANUARY 23: General view of the atmosphere on Main Street during the 2011 Sundance Film Festival on January 23, 2011 in Park City, Utah. Jemal Countess / Getty Images

SAN JUAN, PUERTO RICO- APRIL 26: Colorful homes line the cobblestoned streets April 26, 2004 in Old San Juan, the original capital city of San Juan, Puerto Rico. The old city is a historic district of seven square blocks made up of ancient buildings and colonial homes, massive stone walls and vast fortifications, sunny parks and cobblestoned streets. Joe Raedle / Getty Images

SHANGHAI, CHINA - SEPTEMBER 21: Thousands of shoppers walk along the pedestrian mall of Nanjing road, the main shopping street in Shanghai, 21 September 1999. City authorities launched a minibus service today along the street to provide tired shoppers a ride to and from their favourite shopping centres. LIU JIN / AFP/Getty Images