Riga, the vibrant capital of Latvia, offers a captivating blend of medieval charm and contemporary energy. Founded in 1201, Riga’s Old Town, a UNESCO World Heritage Site, is a treasure trove of stunning architecture and historical landmarks. Wander through its cobblestone streets to admire the intricately carved facades of buildings like the House of the Blackheads, a striking 14th-century guildhall that epitomizes Riga's rich merchant history.

Capri, a jewel of the Tyrrhenian Sea, has long been a favorite retreat for emperors, artists, and writers. This enchanting island off Italy's Amalfi Coast captivates with its dramatic cliffs, turquoise waters, and timeless elegance. The most iconic sight on Capri is the Blue Grotto, a sea cave illuminated by a magical blue light created by sunlight passing through an underwater cavity.

Set on the Adriatic Sea, Zadar, Croatia, is a major Dalmatia historical center and a tourism magnet. Walk ancient streets, see Roman ruins and enjoy white-sand beaches.

Evidence of our nation's birth abounds in Boston, a hub of revolution that is essentially the oldest city in the United States. Visitors are compelled to walk the 2.5-mile Freedom Trail around the city center, and bear witness to 16 historical locations related to the history of America.

Louisville is a city that knows how to make an impression. Birthplace of the Kentucky Derby, home to bourbon legends, and packed with stories that stretch back over two centuries, this river city blends tradition with bold creativity. Start downtown on West Main Street, also known as Museum Row. Here, visitors can tour the Louisville Slugger Museum & Factory, where real bats are still made, and marvel at the 120-foot baseball bat leaning against the building.