jxk, 1 year ago

www.openstreetmap.org – geography

www.orchidroots.com – official orchid names, and pictures

and the sister projects of Wikipedia, in particular:

en.wiktionary.org – dictionary

en.wikisource.org – old books (also in other languages)

en.wikivoyage.org – touristic information

species.wikimedia.org – species

You said “beyond Wikipedia”, but I will also mention that Wikipedia in other languages is an excellent resource to learn a language.