Photo: Toohool, CC BY-SA 4.0 Free parks & gardens in Baltimore
Photo: Toohool, CC BY-SA 4.0 
Photo: Baltimore Heritage from Baltimore, MD, USA, CC0 Baltimore Museum of Art
Free, always
Photo: Scott218, CC BY-SA 4.0 Druid Hill Park
Free, always
Photo: Matthew Binebrink, CC BY-SA 4.0 Patterson Park
Free, always
Photo: Simil Raghavan, CC BY-SA 4.0 Cylburn Arboretum
Free, always
Photo: Marylandstater (talk) 23:42, 25 April 2008 (UTC), Public domain