Visit the new cubs at The Maryland Zoo In Baltimore

Visit the new cubs at The Maryland Zoo In Baltimore (JEFFREY F. BILL / June 18, 2014)

Train Ride to Mount Clare Museum House. Buy a discounted train-ride ticket to the Mount Clare Museum House when you purchase a regular admission ticket to the B&O Railroad Museum. Year-round. B&O Railroad Museum, 901 W. Pratt St., (410) 752-2490, borail.org.

World Oceans Day. Spend the weekend celebrating World Oceans Day at the National Aquarium. Enjoy aquatic-themed performances, workshops and more. June 7-8, 10 a.m.-3 p.m., National Aquarium, 501 E. Pratt St., (410) 576-3800, aqua.org.

Zoos

Adventure Aquarium. 1 Riverside Drive, Camden, N.J., (856) 365-3300, adventureaquarium.com. If you’re heading up north this summer, you shouldn’t miss this place. Hang with hippos, penguins, sharks, and more. But don’t forget to call ahead before making the trek—it can get busy during this time of year.

Maryland Zoo in Baltimore. 1876 Mansion House Drive, (410) 396-7102, marylandzoo.org. Enjoy the Maryland Zoo’s animals such as lions, giraffes, and more at the zoo right by Druid Hill Park.

Catoctin Wildlife Preserve and Zoo. 13019 Catoctin Furnace Road, Thurmont, Md., (301) 271-3180,cwpzoo.com. This zoo is committed to broadening human understanding of the animal world through various exhibits, safaris, camel rides, and more.

National Aquarium in Baltimore. 501 E. Pratt St., (410) 576-3800, aqua.org. Feed the animals, watch a 4-D movie, and get up close and personal with various aquatic friends.

Plumpton Park Zoo. 1416 Telegraph Road, Rising Sun, Md., (410) 658-6850, plumptonparkzoo.org. This is somewhat smaller than your traditional zoo, but that doesn’t mean you should skip it. It’s home to birds, wolves, and even a tiger and capuchin monkey, and they all want you to visit.

National Zoo. 3001 Connecticut Ave. NW, Washington, D.C., (202) 633.4888, nationalzoo.si.edu. Part of the Smithsonian (read: free admission), the National Zoo is worth the D.C. commute. Exhibits include a bird house, elephant trail, and cheetah conservation station.

Philadelphia Zoo. 3400 W. Girard Ave., Philadelphia, Pa., (215) 243-1100, philadelphiazoo.org. Everything you’d want in a zoo, and more. Make sure to hit the Zoo360 Animal Exploration Trails, which link animal habitats, giving the residents more room to roam.

Salisbury Zoological Park. 755 S. Park Drive, Salisbury, Md., (410) 584-3188, salisburyzoo.org. Visit this zoo near Ocean City for general zoo experiences plus more, including home-school programs, storytime, and zoo camp.

Blackwater National Wildlife Refuge. 2145 Key Wallace Drive, Cambridge, Md., (410) 228-2677,fws.gov/blackwater. Not technically a zoo but still chock-full of things to see. The refuge provides shelter for migratory birds and attractions for all age groups.