Galaxy X
https://en.wikipedia.org/wiki/Galaxy_X_(galaxy)
http://earthsky.org/space/have-astronomers-pinpointed-dark-matter-galaxy-x

The Hercules-Corona Borealis Great Wall
https://en.wikipedia.org/wiki/Hercules%E2%80%93Corona_Borealis_Great_Wall#Explanations_for_the_clustering
https://www.space.com/33553-biggest-thing-universe.html
The CMB Cold Spot
https://en.wikipedia.org/wiki/CMB_cold_spot
http://www.skyandtelescope.com/astronomy-news/debate-on-universes-cold-spot-heats-up/

Fermi Bubbles
http://astronomy.com/news/2017/03/fermi-bubbles
https://www.space.com/28333-fermi-gas-bubbles-milky-way-core.html

Lyman-Alpha Blobs
http://www.sci-news.com/astronomy/lyman-alpha-blobs-04208.html
https://en.wikipedia.org/wiki/Lyman-alpha_blob

Green Bean Galaxies
https://en.wikipedia.org/wiki/Green_bean_galaxy
https://www.urban-astronomer.com/news-and-updates/green-bean-galaxies/

Tabby's Star
https://en.wikipedia.org/wiki/KIC_8462852
https://astronomynow.com/tag/tabbys-star/
Segue 1
https://www.scientificamerican.com/article/fossil-galaxy-segue1/
https://en.wikipedia.org/wiki/Segue_1
https://arxiv.org/abs/1403.6116

CDF-S XT1
http://www.sci-news.com/astronomy/chandra-mysterious-explosion-04749.html
https://thecosmogasmicperson.wordpress.com/2017/04/06/mysterious-x-ray-bursts-observed-in-galaxy-cdf-s-xt1/

The Zone of Avoidance
https://en.wikipedia.org/wiki/Great_Attractor#Vela_Supercluster
https://en.wikipedia.org/wiki/Zone_of_Avoidance