Children's museum, zoo, trains and a free arboretum.
Port Discovery Children's Museum
Baltimore · Baltimore City · Children's museum
Indoor- Ages: Under 1 free
- Cost: $25.95; advance tickets recommended
- Hours/season: Fall: Fri–Sat 10am–5pm, Sun 11am–5pm, Mon & Thu 10am–3pm
Official site →The Maryland Zoo
Baltimore · Baltimore City · Zoo
Outdoor- Ages: 2+ ticketed
- Cost: $33 adults / $33 kids 2–11
- Hours/season: October: daily 10am–4pm (last entry 3:30)
Official site →National Museum of Railroad History & Innovation (B&O)
Baltimore · Baltimore City · Train museum
Indoor- Ages: All ages (official page doesn't list a child age range or under-2 policy; ask at admissions)
- Cost: Adults $20, children $12; free on-site parking
- Hours/season: Daily 10am–4pm
Official site →Cylburn Arboretum
Baltimore · Baltimore City · Arboretum
OutdoorFree- Ages: All ages
- Cost: Free
- Stroller/access: Paved paths to buildings; trails are walking-only (no strollers)
- Hours/season: Tue–Sun 8am–8pm through Oct 19; 8am–5pm starting Oct 20, 2026; closed Mon
Official site →Irvine Nature Center
Owings Mills · Baltimore County · Nature center
IndoorOutdoor- Ages: 5 & under free
- Cost: $5 per person age 6+
- Hours/season: Tue–Sun 9am–5pm
Official site →