The recently inaugurated green oasis (the Indian capital's version of Central Park) features Delhi's first arboretum, with multiple species of trees (including a Bonsai House), plants, birds and butterflies. Mughal architecture dating back to the 16th century still remains on park grounds, along with the adjacent Humayun's Tomb. The city zoo is not too far from here; future plans include linking the two to one another to create one vast recreational expanse.

Scattered throughout the Old Town, these twelve churches are among the oldest buildings in Cologne—most of them date back to the 12th and 13th centuries. They’ve all got that heavy Romanesque look, but each one’s a bit different. Great St. Martin stands out with its massive tower right by the river, St. Gereon has got an unusual oval dome, and St. Maria im Kapitol is one of the largest. You don’t need to see all twelve, but stopping in at a couple while you’re exploring the Old Town gives you a good feel for the city’s medieval side.

The Memphis Rock 'n' Soul Museum isn’t just about music—it’s about the people who made it. The exhibits dive into the stories of the musicians who broke barriers and shaped rock and soul, pushing through racial and social struggles to change popular culture forever. It’s a solid stop for anyone who wants to understand how Memphis became a music powerhouse.

If you are an airplane enthusiast, this museum is your fit. Inside you will find one of the last Lockheed L A1011 Tristar planes and a guided tour can give you a cultural and historical background of the Royal Saudi Airforce.