- Descent to hollow, north of Silvenar, Malabal Tor
- Boatswain nearby Windhelm.
- Mages Guildhall, top floor, Windhelm.
[This is Guylaine Marilie's outdated but entertainingly written and well-illustrated reference on late Dwemer architecture. Excerpt is from the chapter describing the Second Empire style of approaches and defenses, and mentioning the common formal convention of the "Four Tests". The book also mentions that the Telvanni have adopted this Four Tests convention as an aesthetic element in their defenses and approaches to their towers.]
"The Test of Pattern requires the observer to examine and analyze for patterns before he acts, with the understanding that many patterns are subtle or hidden.
"The Test of Disorder requires the observer to proceed systematically when no pattern is perceived. When the observer recognizes that many things must be done, and in no specific order; the procedure is to perceive and order all the things to be done, and, upon doing a thing, to recall how and when that thing has been done. For example, the observer must remember the initial position of a thing, and also the new position of that thing.
"The Test of Evasion requires the observer to examine the obstacle, and compare his resources and abilities; if the obstacle is too difficult, seek for a path around the difficulty.
"The Test of Confrontation requires the observer to examine the obstacle, and compare his resources and abilities; if the obstacle is too difficult, look for a path around the difficulty... but if no path around can be found, confront the obstacle directly."