Time seems to stand still in Evora, a well-preserved medieval town that features protective walls, a 13th-century cathedral, several palaces,and a 1st-century Roman temple. No surprise that the town center is a UNESCO World Heritage Site. Even though it’s kind of creepy, don’t miss the Chapel of Bones, where the remains of nuns and monks are arranged in a haunting mosaic.

When most people think of Zermatt, they think of one thing: The Matterhorn. This ultimate Swiss icon looms over Zermatt, first drawing visitors here in the 1860s. The village of Zermatt itself is lovely and car-free, with old-fashioned brown chalets and winding alleys. (Don’t worry, you don’t have to walk everywhere—there are electric vehicles and horse-drawn cabs.) Skiing in the region often lasts through early summer, but when the weather’s warmer, it’s a great time to hike.

Houmt-Souk is a tranquil cultural hub, a peaceful meeting point of varying religions and ethnicities. Nowhere is this melange more evident than at the markets, where you could spend hours, even days, poring over locally crafted pottery, jewelry, leather goods, textiles and artwork, as well as a bounty of fruits, vegetables, spices and meats. Don’t miss the beachside fortress, a massive 15th-century structure that’s one of the most important archaeological sites of the region.

Lying in south central Turkey, the moonscaped region of Cappadocia, southeast of Ankara, is most famous for unique geological features called fairy chimneys. The large, cone-like formations were created over time by erosion of the relatively soft volcanic ash around them. Past cultures have dug into them to create dwellings, castles (like Uchisar) and even entire underground cities like Kaymakli and Derinkuyu, used as hiding places by early Christians. Nearby Kayseri is the gateway to the area.

The prophet Mohammed's birthplace is Islam's spiritual center and is strictly off-limits to non-Muslims. The pillars of Islam state that all Muslims with the means must undertake Hajj, a pilgrimage to Mecca, once in their lifetime. Those who visit the holy city are rewarded not just by proximity to landmarks and religious sites crucial to the religion, such as the Masjid Al Haram (Holy Mosque), the Mountain of Light, the Black Stone and the Well of Zamzam, but with the forgiveness of all their sins.

Welcome to Bluegrass Country, the "Horse Capital of the World". But you don't have to be an avid racehorse fan to enjoy the natural beauty, culture and history that this exciting city has to offer. At the Raven Run Nature Sanctuary, for example, hiking trails wend their way through forests, meadows and gentle creeks, taking you past historic landmarks; there's even a night-time guided walk for admiring the stars. The best place in the world for raising thoroughbred horses, Lexington has over 500 horse farms. The Kentucky Horse Park features films, horse shows and exhibits. Be sure to tour the American Saddle Horse Museum, dedicated to the native Kentucky breed, and watch races at the lovely Keeneland Race Course in season. Historic sites are plentiful here, including the Waveland State Historic Site, the childhood home of Mary Todd Lincoln and the Ashland estate of famed Kentucky statesman Henry Clay.