Krabi, located on the southwest coast of Thailand, is known for its towering limestone cliffs, warm Andaman waters, and a coastline dotted with over 150 islands. One of its most iconic sites is Railay Beach, which is accessible only by boat due to the cliffs that cut it off from the mainland. Railay is famous among rock climbers for its natural limestone formations, some of which hang directly over the sea.

San Juan, Puerto Rico’s capital, is a city where cobblestone streets lead to centuries-old forts and pastel-colored buildings overlook the Atlantic. The district of Old San Juan is a UNESCO World Heritage Site, known for its Spanish colonial architecture and thick stone walls that once defended the city from pirates and naval attacks. The city hosts regular events such as La Campechada, which celebrates Puerto Rican art and literature with live performances and open-air exhibits.

Anglesey is an island off the northwest coast of Wales with a history that stretches back thousands of years. Fertile lands and strategic coastal position made it an early center for agriculture, livestock, and maritime trade.

Bordeaux is ready for its close-up! After years of improvements, modern public transportation is in place and the city is gleaming after a wave of restorations. When visiting this lovely destination, be sure to walk across the Garonne River-spanning Stone Bridge (17 arches in all!) and see Place des Quinconces, France's grandest public square.

Tel Aviv began in 1909 as a new neighborhood beside the ancient port of Jaffa. The city is now home to the largest cluster of Bauhaus-style buildings in the world which earned UNESCO recognition for its early 20th-century urban planning. Visitors can explore those structures on guided architectural walks through streets like Rothschild or Dizengoff.