Essen began in the mid-9th century as home to a women's abbey, then during the Renaissance became an important coal mining town and later a major steel production center. The famed metal-working Krupp family opened their first foundry here in 1810. One of Essen's most interesting places is the Zollverein Coal Mine Industrial Complex, once the largest colliery in the world. Now a UNESCO World Heritage Site, it attracts 800,000 visitors a year, often hosting art exhibitions and performances.

Whether it’s day or night, the resort town of Sliema thrums with activity. Historic cathedrals, watchtowers, and forts spatter the area, while along the waterfront locals shop, dine, bar hop, or stroll along the promenade for views of the shimmering Mediterranean.

Looking for a great beach destination? The Red Sea’s warm water is great for swimming, and there are miles of great beaches in Sharm El Sheikh for working on your tan, but if you’re a diver, look no further. We’re talking enormous schools of fish and tons of excellent dive sites. Sure, it’s easier to get here if you live in Europe, but even if you’re farther afield, it’s worth the trek. (Editor's note: Our list was compiled before political unrest prompted many countries to issue travel warnings for Egypt. If you're currently planning a trip to Egypt, please consider the risks and monitor your government's travel alerts.)