How long have aquariums been around?

Aquariums have been around for centuries, with the earliest known examples dating back to ancient Babylon, where fish were kept in ornamental ponds. However, the modern concept of the aquarium began to take shape in the 19th century, particularly after the establishment of glass tanks. The first public aquarium opened in London in 1853, marking a significant development in the popularity and accessibility of aquariums for both educational and recreational purposes.