Secret Dungeon
https://www.youtube.com/watch?v=E5wmJaQ3GfY

A Hidden Well
http://www.cracked.com/article_20311_the-5-most-wtf-things-found-while-working-old-house.html

The KFC Tunnel
https://www.washingtonpost.com/nation/2018/08/24/drug-smuggling-tunnel-mexico-found-under-abandoned-kfc-arizona/?noredirect=on&utm_term=.5b00606e38e9

The Kit
https://www.reddit.com/r/AskReddit/comments/f5xwd/whats_the_most_awkward_or_unexplainable_thing_you/c1djwdq/

The HMS Namur
http://eerieplace.com/haunted-chatham-dockyard-chatham/
https://en.wikipedia.org/wiki/HMS_Namur_(1756)

Dead Animals
https://nationaltrustdyrhampark.wordpress.com/2015/02/25/uncovering-lost-treasures-and-mummified-rats/

A Little Poem
https://www.reddit.com/r/AskReddit/comments/5at1fx/people_who_moved_into_older_houses_where_the/

Witchmarks
https://www.nationaltrust.org.uk/knole/features/witchmarks-at-knole-date-back-to-gunpowder-plot

Devil Coins
https://www.bristolpost.co.uk/news/bristol-news/archaeologists-find-mysterious-devil-coins-1712763
https://www.express.co.uk/news/uk/979852/bath-abbey-devil-coins-wicker-man

The Previous Tenant
https://www.mirror.co.uk/news/us-news/harrowing-emergency-call-after-womans-12116171