Mr., hall, mansion, palace, temple, lord
殿 centers on a grand, elevated building or the person associated with it: a palace, mansion, or temple, and by extension a respectful title for a lord or Mr.
殿 originally combined 尸 (a building or roof) with 殳 (a hand holding a weapon or tool), suggesting a grand hall or mansion where weapons were displayed or guards were stationed. The modern form retains these components, though the exact historical development is somewhat uncertain.
The left side looks like a roofed building (尸) over a gathering (共-like shape), and the right side 殳 suggests a hand with a tool. Imagine a grand hall where a lord stands under the roof, overseeing his mansion.
For デン, picture a grand den (a cozy room in a mansion) where the lord relaxes: den -> デン, and the den is inside the palace.
Mr.; Mrs.; Miss; Ms.
palace
temple; shrine; sanctuary
Your Highness; His Highness; Her Highness
palace; hall
palace; court
nobleman; dignitary; lord
you
main hall (of a Shinto shrine); main shrine; inner sanctuary
gentlemen; men
precipitation; deposition; settlement (e.g. of sediment)
(main building of a) Shinto shrine
front shrine; hall of worship
shrine; mausoleum
minister (of government); noble
current master; father of one's current master
main temple; main building of a shrine
abode of demons; hotbed (of graft); pandemonium
reception hall (in a temple or palace)
stately mansion