Visit Old Aden (Crater)

Roman forum, Romanesque churches and the Sea Organ — steps that play music from the waves — on a Dalmatian peninsula.

Visit Aden, a historic port city in Yemen. Explore the ancient Crater district (the city's original volcanic core with Ottoman-era architecture), see the National Museum of Aden (housing artifacts from Yemen's pre-Islamic and Islamic periods), and visit the Cisterns of Tawila (ancient water reservoirs dating back over 2,000 years).

Visit Sanaa, the capital of Yemen, known for its ancient Old City, a UNESCO World Heritage site with distinctive multi-story mud-brick architecture. Explore the Al Saleh Mosque (one of the largest mosques in Yemen, featuring modern design and capacity for thousands), wander through the bustling Souk al-Milh (traditional market selling spices, textiles, and local crafts), and see the National Museum (housing artifacts from Yemen's rich history, including pre-Islamic and Islamic periods).

Lively harbour city of music and pubs.

Visit New York City, the most populous city in the United States. See the Statue of Liberty (iconic symbol of freedom, gifted by France in 1886), walk through Central Park (843-acre urban park with lakes, trails, and the Bethesda Terrace), explore Times Square (bustling commercial hub known for its bright billboards and Broadway theaters), and visit the Metropolitan Museum of Art (one of the world's largest art museums with over 2 million works).

Sail through a narrow gap into the flooded caldera of an active volcano, past a ruined whaling station and beaches warm enough to dig a hot bath.

Antigua's iconic yellow arch.

Maya "Pompeii" buried by ash, UNESCO-listed.