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.

Padua, a hidden gem in Northern Italy’s Veneto region, is a city where medieval splendor meets a vibrant modern atmosphere. Known for its ancient university, founded in 1222, Padua is one of the oldest and most prestigious in the world, having nurtured the minds of great scholars like Galileo Galilei.

Syros, the capital of the Cyclades, stands apart from its island neighbors with its blend of neoclassical architecture, Orthodox and Catholic traditions, and year-round local life. Ermoupoli, the main town, was once a thriving 19th-century port and still displays its legacy through grand mansions, marble-paved squares, and the imposing Apollo Theater which was designed by an Italian architect and often referred to as a miniature La Scala.

In the heart of Oman lies Nizwa, a city once considered the country’s capital and a hub of learning and trade. Its iconic round fort, built in the 17th century, remains one of Oman’s most visited landmarks.

A visit to Como is like looking through a manual on the history of architecture. Its ancient walls, the Duomo with its rich Gothic-Renaissance façade, the Broletto, the Castel Baradello, the Romanesque basilicas of Sant'Abbondio and S. Fedele, the myriad of monuments created by the Comacini Masters, and the modern architectural lines, all represent foundations of the urban and tourist fabric, interwoven with unforgettable splendor.