Even if the dollar is relatively strong, you may still be looking for ways to save if you go to Europe this summer. Here is a list of 10 free and fun things to do across the pond:

• See 18th-century art in Madrid, Spain, at the Palace of Liria, the residence of the Duchess of Alba at Calle Princesa 20. Guided tours take place Fridays at 10 a.m., 11 a.m. and noon.

• Enjoy food, entertainment and a religious procession in Rome's Trastevere area on the Tiber's west bank during the Festa di Noantri. The European Travel Commission describes the festival, which runs for eight days in the second half of July, as "Fellini-esque."

• In Leipzig, Germany, tour the Porsche factory (www.porsche-leipzig.de).

• Rollerblade through Paris. The Friday Night Fever is a mass group tour by inline skaters of the city at night (www.pari-roller.com). Meeting point is Place Raoul Dautry in the 14th Arrondissement, between the Montparnasse office tower and the Paris-Montparnasse train station, at 10 p.m.

• Visit a sculpture park in Oslo, Norway, with more than 200 works by the country's most famous sculptor, Gustav Vigeland (www.vigeland.museum.no).

• In Lisbon, Portugal, check out the free Gulbenkian Museum, which houses a magnificent collection of Egyptian, Greek, Roman, Islamic, Asian and European art.

• Sandeman's New Europe tour company is offering walking tours of nine European cities free of charge except for optional tipping. The latest addition is a three-hour tour of Prague, Czech Republic (www.sandemans-new.com).

• Visit the Church of Our Lady (Fraumunster) in Zurich, Switzerland, a 13th-century building that includes two modern art treasures: a stained-glass window done by the artist Alberto Giacometti in the 1940s, along with five stained glass windows designed by Marc Chagall in 1970.

• Relish Frank Zappa in Vilnius, Lithuania, where there is a monument to the musician in Uzupis, an area known for its countercultural leanings, cafes and galleries.

• Watch Dutch wooden shoes being hand-carved and painted while learning the lore behind them, in Amsterdam, the Netherlands (www.woodenshoefactory.com).

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