Beijing, the capital of China, is a city where history and modern life intersect on a grand scale. Ancient landmarks like the Forbidden City, Tiananmen Square, and the Temple of Heaven reflect centuries of imperial heritage, while the Great Wall lies just outside the city, offering views of one of the most famous engineering feats in the world.

Tunis' white-washed, blue-shuttered buildings hide a treasure trove of Arabic and Ottoman art. Inspect illuminated manuscripts from the Koran, follow the twists and turns of the fascinating old Medina (inner city), marvel at the ornate Palace of Dar Ben Abduallah and the magnificent Djamaa-Ez-Zitouna Mosque, whose 184 columns were "recycled" from the rocky ruins of Carthage.

In the heart of Zambia lies Livingstone, a city that serves as the gateway to one of the most spectacular natural wonders in the world: Victoria Falls. This UNESCO World Heritage Site, often referred to as "The Smoke That Thunders," is renowned for its breathtakingly powerful waterfalls on the Zambezi River. The falls, which span over 1,700 meters wide and plunge 108 meters deep, offer a mesmerizing display of nature's might.

Sintra, located just 40 minutes from Lisbon, feels like a world apart. Tucked into the hills of the Serra de Sintra, this town has drawn kings, poets, and explorers for centuries. It was once the summer retreat of Portuguese royalty, who left behind palaces and gardens that seem pulled from a storybook. The most famous, Palácio da Pena, is perched high above the town with bold red and yellow towers that blend Romanticism with Moorish and Gothic styles.

Trebinje, the southernmost city in Bosnia and Herzegovina, sits just a short drive from the Adriatic coast but offers a completely different rhythm. Framed by hills and set along the Trebišnjica River, the city has a history stretching back to Roman times. The river that winds through the city is one of the longest sinking rivers in the world and often disappears underground and resurfaces in various places.