Bonifacio is located at the southernmost tip of the island of Corsica. The town towers above the "Bouches de Bonifacio" the strait between Corsica and Sardinia, above islands and reefs. Bonifacio has survived a unique history, founded in 833, and somehow has defied time and events.

Machu Picchu is a story carved into stone, perched nearly 2,500 meters above sea level in the cloud forests of southern Peru. Built in the 15th century and later abandoned, this Inca citadel was unknown to the outside world until 1911, when explorer Hiram Bingham brought it to international attention. Today, it remains remarkably well-preserved, with more than 150 stone structures, terraced fields, ceremonial fountains, and temples aligned with astronomical events.

St. George’s, the capital of Grenada, is a picturesque harbor town nestled within the rim of an extinct volcano. Its horseshoe-shaped Carenage, lined with pastel-colored colonial buildings, offers a postcard-perfect introduction to the island.

Novi Sad, Serbia’s second-largest city, sits along the banks of the Danube River and has long served as a cultural meeting point in the Balkans. Its centerpiece is Petrovaradin Fortress, a massive 18th-century stronghold nicknamed the "Gibraltar on the Danube." The fortress is known not just for its historic architecture but also for its network of underground tunnels and the iconic clock tower where the hands are reversed, meaning the large hand shows the hour.

Zacatecas, built into the slopes of a narrow ravine in north-central Mexico, is a city with a deep mining past and a striking skyline. The historic center, a UNESCO World Heritage Site, is known for its pink cantera stone buildings, narrow alleys, and impressive baroque facades. The Cathedral Basilica of Zacatecas, completed in 1752, stands as one of the most detailed examples of Mexican baroque architecture, with hundreds of carved figures covering its sandstone exterior.