Cardiff, the capital of Wales, is a city brimming with history, culture, and modern vibrancy. At the heart of its historic charm stands the Cardiff Castle, a magnificent structure that dates back to Roman times and has been a centerpiece of Welsh history for centuries. Explore the castle’s stunning medieval architecture and lavish interiors, or take a walk around the castle grounds, which offer picturesque views of the city skyline.

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.

Puerto Rico, an unincorporated territory of the United States, is a Caribbean island rich in history, culture, and natural diversity. Its capital, San Juan, is a vibrant hub where centuries-old Spanish forts, pastel-colored colonial buildings, and lively plazas tell the story of the island’s complex past.

Hawaii Island, also known as the Big Island, is a place where natural wonder and cultural heritage converge in breathtaking ways. The island’s diverse landscapes span black sand beaches, verdant rainforests, and snow-capped mountains. Volcanoes National Park is a must-see destination where visitors can witness the power of Earth’s creation at the Kīlauea and Mauna Loa volcanoes, two of the most active in the world.

Macao, a Special Administrative Region of China, is known for its distinctive blend of Portuguese and Chinese heritage. Once a Portuguese colony, the city retains historic squares, colonial architecture, and cobblestone streets that contrast with its modern skyline of resorts and entertainment complexes.