The Great Wall of China stretches across mountains, deserts, and grasslands, forming one of the most striking man-made landmarks in the world. Rather than a single continuous wall, it is a network of sections built with stone, brick, and packed earth, each shaped by the landscape it crosses. In areas near Beijing, such as Mutianyu, the wall winds along forested ridges, offering sweeping views that change with the seasons.

Tenby sits on the Pembrokeshire coast of southwest Wales, where medieval walls still encircle a compact town above the sea. Its history as a fortified port is visible in stone ramparts, narrow lanes, and the ruins of Tenby Castle, which overlook the harbor.

Lincoln is a town in New Hampshire’s White Mountains, situated along the Pemigewasset River near the western entrance to Franconia Notch. Its setting combines a compact commercial center with wooded hills, mountain valleys, and easy access to protected public lands. Lincoln is closely connected with the larger Franconia Notch landscape, while its location along Interstate 93 makes it an important stopping point for travelers crossing the White Mountains.

Guanajuato, a UNESCO World Heritage City nestled in the mountains of central Mexico, is a place where history is built into every hillside alley and underground tunnel. Today, visitors can still tour La Valenciana Mine, where centuries-old tunnels and original mining equipment offer a glimpse into the city's wealth-driven past. The nearby Templo de San Cayetano, built by mine owners in the mid-1700s, is a stunning example of baroque design, lined with gilded altars and intricate woodwork.

Puebla, a city nestled in the heart of Mexico, is a captivating blend of colonial charm, vibrant culture, and rich history. Known as the "City of Angels," Puebla's well-preserved historic center is a UNESCO World Heritage site, filled with stunning baroque architecture, colorful tiled buildings, and bustling markets. Puebla is also a haven for food lovers, celebrated as the birthplace of some of Mexico’s most iconic dishes.