Have I got the page for you...

https://en.wikipedia.org/wiki/Wikipedia:Unusual_articles

https://en.wikipedia.org/wiki/Bouba/kiki_effect

https://en.wikipedia.org/wiki/Interstellar_travel#Wait_calculation

https://en.wikipedia.org/wiki/Valeriepieris_circle

https://en.wikipedia.org/wiki/Surreal_number

https://en.wikipedia.org/wiki/Secessio_plebis

https://en.wikipedia.org/wiki/Spintronics

https://en.wikipedia.org/wiki/Landauer%27s_principle

https://en.wikipedia.org/wiki/Law_of_large_numbers

https://en.wikipedia.org/wiki/Law_of_truly_large_numbers

https://en.wikipedia.org/wiki/Public_Universal_Friend

https://en.wikipedia.org/wiki/Crash_at_Crush

https://en.wikipedia.org/wiki/The_Great_Picture

https://en.m.wikipedia.org/wiki/Method_of_loci

https://en.m.wikipedia.org/wiki/Garden-path_sentence

Let me know which ones you liked the most and I can give you some more ;)

I don't know if this is one you'd like but it's an interesting one in general:
https://en.wikipedia.org/wiki/List_of_common_misconceptions

https://en.wikipedia.org/wiki/List_of_unusual_deaths

https://en.wikipedia.org/wiki/Piezoelectricity

https://en.wikipedia.org/wiki/Bayesian_approaches_to_brain_function

https://en.wikipedia.org/wiki/List_of_musical_scales_and_modes

https://en.wikipedia.org/wiki/List_of_chord_progressions

https://en.wikipedia.org/wiki/Tritone

https://en.wikipedia.org/wiki/Castrato

https://en.wikipedia.org/wiki/Equal_temperament

https://en.wikipedia.org/wiki/Metallic_mean

https://en.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo

https://en.wikipedia.org/wiki/Ono_no_Takamura

https://en.wikipedia.org/wiki/Semantic_satiation
https://en.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo
https://en.wikipedia.org/wiki/Zipf%27s_law
https://en.wikipedia.org/wiki/List_of_cognitive_biases
https://en.wikipedia.org/wiki/Hofstadter%27s_law

https://en.wikipedia.org/wiki/IP_over_Avian_Carriers

Technically this doesn't fit the criteria, but I am under the impression that you would enjoy it if you dont already know about it:

Basically a wiki for tropes in fiction and media. Very interesting

https://tvtropes.org/pmwiki/pmwiki.php/Main/Tropes

Tropes - TV Tropes

A trope is a storytelling device or convention, a shortcut for describing situations the storyteller can reasonably assume the audience will recognize. Tropes are the means by which a story is told by anyone who has a story to tell. We collect …

https://en.wikipedia.org/wiki/List_of_-gate_scandals_and_controversies

https://en.wikipedia.org/wiki/In_rem_jurisdiction

https://en.wikipedia.org/wiki/Love

https://t.co/Vi5p4tbr56 zone of death in Yellowstone related to the 6th amendment

https://en.wikipedia.org/wiki/Sacred_geometry

1. Benford's Law - A mathematical law about frequency distribution of leading digits in many sets of data. Link

2. Semantic Satiation - A linguistic phenomenon that occurs when a word is repeated so often it loses its meaning. Link

3. Dancing Plague of 1518 - An event in which hundreds danced without rest, leading to exhaustion and deaths. Link

4. Zipf's Law - A statistical distribution found in various data sets from city populations to words in a language. Link

5. Euler's Identity - Dubbed the "most beautiful theorem in mathematics". Link

6. Pareidolia - Perceiving familiar patterns where none exist, like seeing faces in clouds. Link

7. Eunoia - A unique word with a rich history and meaning. Link

8. Baader-Meinhof phenomenon - The sensation where something you've just noticed or been told about suddenly appears everywhere. Link

9. Timeline of the Far Future - Speculative events for the next 10^100 years of the future. Link

10. Atavism - Reverting to ancestral traits; an evolutionary throwback. Link

Happy exploring!

Further reading:

• Wikipedia's Unusual Articles

• List of unsolved problems in philosophy