Serbia is a country where centuries-old monasteries sit just a short drive from lively cities, and where the past is never far from daily life. In Belgrade, the capital, Kalemegdan Fortress offers panoramic views where the Danube meets the Sava River. This fortress has witnessed more than 100 battles and been rebuilt many times over two millennia. Within its walls are Roman ruins, an open-air military museum, and quiet park paths perfect for wandering between centuries of layered history.

Do you want a vacation experience so unique and thrilling that you actually have to wear a hard hat? Look no further than New Zealand's White Island, where you can stand on an active volcano! Located offshore from Whakatane and Tauranga, White Island is New Zealand's only live marine volcano and one of the most active in the world. The tours are quite the experience, especially since you can hear the hissing and bubbling of the volcano all around you!

Buffalo, the second-largest city in New York State, sits at the eastern end of Lake Erie where the Niagara River begins its journey toward Niagara Falls. Once a powerhouse of American industry and trade, Buffalo thrived in the 19th and early 20th centuries as a major shipping and manufacturing hub, thanks to its strategic location along the Erie Canal and Great Lakes.

Canada spans an immense and diverse landscape, offering experiences that range from cosmopolitan city life to some of the most pristine wilderness on Earth.

Located on the Yucatan Peninsula of Mexico, Chichen Itza is the site a well preserved Mayan ruins, including several large pyramid structures and more.