Without a doubt, the Panama Canal is one of mankind's greatest feats of engineering, uniting the Atlantic Ocean with the Pacific. It's exciting to view the Panama Canal on an excursion from Panama City -- but even more exhilarating (not to mention bucket list-worthy) to actually traverse it. Panama Canal cruises allow travelers to cross the historic passageway as part of extended trips also exploring destinations in Mexico, Central America and South America.

• Top Panama Canal Cruises

Our Central America Photo for June features La Cueva Maya, overlooking Guatemala's Lake Atitlan near Panajachel. It's a moderate hike up to the cave, where local Mayans still perform religious ceremonies before this panoramic backdrop.

• More Photos of Lake Atitlan
• The Villages of Lake Atitlan

Out of the countless Costa Rica beaches for travelers to choose from, Playa Tamarindo is definitely one of the tropical nation's most popular destinations. Located on the Nicoya Peninsula on Costa Rica's Pacific Coast, Playa Tamarindo is just a 45 minute drive or can ride from Liberia International Airport.

Why is Playa Tamarindo so popular? Our Playa Tamarindo photo gallery -- which includes this sunset, wow! -- should explain why.

While Central America is most celebrated for its natural attractions (jungles, beaches, volcanoes and more) and its ancient Mayan ruins, it's also home to a number of big cities -- even huge cities. Guatemala City, Central America's largest, has a population of nearly 3 million people. Cities like Panama City and San Jose boast world-class amenities and attractions like luxury shopping malls and museums. All have tons to offer travelers, whether staying a week or simply passing through.

Explore the big cities of Central America!