Set in the Ozark Mountains, Eureka Springs is the perfect antidote for the stressed-out traveler: A gorgeous community with perfectly preserved historical Victorian buildings built around the city's natural hot springs — all worth exploring, photographing and viewing for days.

Mayan ruins tower over the sea in Tulum. The formerly walled city was one of the last to be built by the Mayans, and its archaeological sites are incredibly well preserved. Take a break from the beach to visit El Castillo, the Temple of the Frescoes, and the Temple of the Descending God. Explore an underground river under a canopy of stalactites in the sacred caverns of LabnaHa Eco Park, or dive into Cenote Dos Ojos to snorkel inside of caves in the middle of a forest.

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.