Carolina Rediviva was erected between 1817 and 1841 and is home to Sweden's oldest university library, founded in 1620. Originally three stories high with two mezzanines, the building now spans 12 stories and has about 5 million books and 3,500 shelf meters of handwritten documents. When you walk through the entrance of the library, you'll come to the exhibition room, where you can view the famous Silver Bible from the 6th century, musical notations made by Mozart himself, medieval manuscripts, and Olaus Magnus' Carta Marina, printed in 1539.

One of the major examples of Sicily's unique encounter of architectonic styles, the Palermo Cathedral is the result of centuries of additions, redecoration, and restorations. It was built in 1185 on the site of a former Byzantine church, which was used as a mosque during the 9th century and it encompasses Medieval, Gothic, Arabic, and Neoclassical styles. Climb up to the roof and enjoy a great view of the city.

New York City is known for its exceptional theater, eclectic performing arts scene, and big Broadway productions. Seeing a famous Broadway show, such as “The Lion King,” “Wicked” and “Hamilton,” is one of the most iconic experiences in New York City. Beyond the theater district, the Harbor Lights Theater Company in Staten Island brings outstanding professional theater to the dynamic North Shore neighborhood. Past productions include “Rent,” “Driving Miss Daisy,” “Oliver!” and “The King and I.” New York theatre is much like the city itself: innovative, experimental, and culturally diverse.

The Seine cuts through the heart of Paris, and seeing the city from the water is one of the easiest ways to take in its big-name sights — from the Eiffel Tower to Notre-Dame. A veritable Parisian institution since 1949, the Compagnie des Bateaux Mouches® runs cruises year-round, with most following a similar route and offering multilingual commentary. Whether you go for a daytime ride or a nighttime cruise when the bridges and monuments are lit up, it’s a relaxing way to see the city from a different angle.