Bordering both Austria and Hungary and couched between the Danube and the Little Carpathian Mountains, Bratislava is a picturesque city whose natural surroundings are rivaled only by its own historic architecture. Dating back centuries, the Old Town is home to numerous historic churches, castles, galleries and museums, including the Museum of Jewish Culture and Bratislava City Museum. The surviving fortifications at Michael's Gate provide a glimpse into the medieval history of the city.

Staré Mesto, the Old Town of Slovakia's capital, whisks visitors back a few centuries as they wander through cobbled streets, admire the Baroque architecture, enjoy summer and Christmas concerts at Old Town Hall and while away time at cafés and restaurants. Venture beyond for more sites, including the 15th-century hrad (castle) with its treasury and museums of history and music, the Slovak National Theatre and the Slovak Philharmonic Orchestra, and the Slovak National Gallery, housed in an 18th-century palace.

The Baroque Palace of Oradea is simply epic. Now a museum, the 18th-century building is home to an outdoor bronze and marble statue park, Transylvanian folk art and a collection of animal remains that includes dinosaur fossils. You could spend days here, but try to make some time for other Oradea attractions, such as the beautiful Art Nouveau buildings of Str. Republicii, the astronomical clock of the Biserica cu Lună, and the Băile Felix thermal spa.

You've probably heard that Guinness tastes better in Dublin (fresh from the factory), but what you may not know is that Dublin is a perfect destination for the whole family. No, we're not suggesting you let the kiddies drink a pint. Instead, take them to the Dublin Zoo, to feed the ducks in Stephen's Green or on a picnic in Phoenix Park. Scholars enjoy walking in the literary footsteps of such writers as Yeats and Joyce, while discerning shoppers have their pick of designer boutiques.

Plan to cross many bridges when in Cork. Ireland's third-largest city began life as an island and now spans both banks of the River Lee, with watery channels running beneath some of its main thoroughfares. The best way to experience this hilly southern seaport is on foot, following the signposted walking tour past St. Finn Barre's Cathedral and the riverside quadrangle of University College up the hill to red and white Shandon Church. Along the way, you'll meet plenty of the city's talkative residents.

Originally founded as a Roman city and now home to three UNESCO World Heritage Sites, Seville is bursting with antique charm. The Alcazar palace complex is a stunning collage of architectural styles, and the Cathedral will impress you with its beauty and its status as the burial site of Christopher Columbus. The Metropol Parasol is the world’s largest wooden structure, a massive mix of grids and swirls that contains a market and a terrace observatory.

Colombo is the gateway to Sri Lanka for most travelers—but don’t be tempted to simply pass through this diverse and interesting city. Take a train ride along the coast to Mount Lavinia, a popular beach, or explore the Talangama Wetland, which several TripAdvisor travelers say is the perfect place to take a break from the bustling streets of the city.