Travel insights and tips on some of the top attractions and best cities in the world

Perhaps one of San Diego's most unique features is its rich maritime history, which is expertly documented and displayed at the prestigious Maritime Museum of San Diego. With an extensive collection of ships, from commercial vessels to steam ferries, this museum explores everything from American military history and beyond.

It's a planetarium; it's a natural history museum; it's an aquarium—wait, it's the California Academy of Sciences! This San Francisco science museum is several institutions wrapped up in one—perfect for the indecisive and curious.

The Denver Downtown Aquarium mermaids show, Mystic Mermaids, is a captivating experience that combines the magic of mermaid mythology with the wonders of aquatic life. The show, popular with all ages, is a portal into an enchanting underwater world, making it a must-see for families and marine enthusiasts alike.

New York City is so big, so all-encompassing, it seems like it would be impossible to see all its major landmarks in a week, let alone in a few hours. Happily, if you take a Circle Line Sightseeing Cruise from New York, it’s entirely possible.

If admiring miniature 13-inch, three-pound penguins, a glowering hammerhead shark, and some very friendly hippos sounds like fun, head over to the Adventure Aquarium in Camden to spend a few hours amongst these and other aquatic residents. Adventure Aquarium is bursting with sea life from around the world in extravagant exhibits and massive glass tanks.

One of Denver’s many awesome attractions, the Downtown Aquarium in captures the thrill of the natural world in an awe-inspiring way. Sustaining more than 500 animal species in over one million gallons of water, this local favorite enthralls people of all ages.