#1.
5677 Harpers Farm Road,Columbia, MD 21044-2002
Batting cages, miniature golf, skate park available - Inquire about birthday parties - Snackbar - Call for hours of operation More on entertainment.com
Includes skating ramps, batting cages and miniature golf. More on Howardcountymd.gov

#2.
5821 Olney-Laytonsville Road, Laytonsville, Maryland
This trail is mostly grassy field for the the first half and moves onto singletrack packed dirt (look really hard for the opening onto the dirt, its hard to see ... More on trails.mtbr.com
Its also around an abandoned landfill so portions of the trail can stink like Sh *t. More on trails.mtbr.com

#3.
5876 Thunderhill Road Columbia, MD
Public skating rink. Lessons offered to all ages and ability levels.
More on Howardcountymd.gov
Great family fun; skate rental, pro shop, snack ... More on Yahoo! Travel

#4.
16923 Norwood road, Sandy Spring, Maryland
The largest Adventure Park in North America. Challenge Yourself! ... More on TripAdvisor
The Park is located in a well-kept wooded area, with trails on the ground for those too timid to be up in t... More on TripAdvisor

#5.
3691 Sarah's Ln, Ellicott City, Maryland 21043
Former girls' school built 1837 on land donated by the Ellicott brothers; now stabilized ruins with garden ... More on Search.visitmaryland.org
Not only are the performances of very high quality, but they are friendly for the entire family . More on Yahoo! Travel

#6.
6570 Dobbin Rd, Columbia, MD 21045
PlayWiseKids encourages children to explore the world around them while sparking their creative imagination. With 24,000 square feet to play in, children can pretend to be rescue heroes driving a r... More on GoCityKids
I highly recommend it for young children . More on GoCityKids

#7.
6700 Needwood Road, Rockville, MD 20855

#8.
8600 Foundry St, Savage, MD
Only 30 minutes from DC, Terrapin Adventures is from families or groups and anyone 8-80. Climb the Terrapin Tower, Soar on their Zipline, traverse the hi-ropes course or enjoy the thrill ... More on Terrapinadventures.com
Staff is very helpful . More on TripAdvisor

#9.
Maryland
To access the Savage Park entrance from Interstate 95, take MD Route 32 (Patuxent Parkway) east, and then turn right on US Route 1 (Baltimore Washington Blvd.), heading south toward Laurel. Turn ri... More on TrailLink.com
The stretch from Vollmerhausen Road to Savage Park is indeed a roller coaster ; a much better route would have been to continue down the riverbank to link up with the Savage Mill Trail instead of ... More on TrailLink.com

#10.
Randallstown
Not very technical but alot jumps and some major air More on trails.mtbr.com
Moderate to challenging for beginners. A good loop. They actually hold races here once or twice a year...so that should say something about the trail. If you're short on time, the loop is great...m... More on trails.mtbr.com
