Arequipa, known as the "White City," is built from sillar, a pale volcanic stone that glows in the sunlight. This architectural detail gives the historic center its striking appearance and has earned it recognition as a UNESCO World Heritage Site. Towering above the city is the perfectly symmetrical Misti Volcano, which, along with two neighboring peaks, forms a dramatic backdrop.

The picturesque city of Rab, located on Rab Island in Croatia, offers a delightful blend of medieval charm and stunning natural beauty. Known for its well-preserved Old Town, Rab features a network of narrow, cobblestone streets lined with historic buildings that reflect its rich past.

Sofia, Bulgaria’s capital, is a city where the past meets the present in a symphony of ancient history, stunning architecture, and vibrant urban life. At the heart of Sofia lies the Alexander Nevsky Cathedral, one of the largest Eastern Orthodox cathedrals in the world. With its golden domes and elaborate frescoes, this architectural marvel serves as a symbol of Bulgarian identity and a must-see attraction.

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.

The metropolitan center of southeastern France, vibrant Lyon abounds with stunning architectural masterpieces, gastronomic delights, and immersive museums. This spectacular city, founded by the Romans centuries ago, rivals Paris as a cultural and social hub for exploring the best that France has to offer.