How about nine in a row? I played Green Spring Valley Hunt Club just north of Baltimore in late October. Hosted US Girl's Junior Championship in 1999. Architects who have worked on this one include Tom Bendelow, Herb Strong, Robert Trent Jones Sr., and currently Tyler Rae. Not great but a fun short course of 6623 yards. Holes #7-15 are all par 4's (#7 is very very good). Never had seen nine in row before.
Second highly unusual feature...BOTH #1 and #18 are par 3's...anyone ever see that (excluding par 3 courses!)?
Lastly, this (although not architecturally related)...anyone ever play a club with four or more words in its name (excluding words "Club", "Golf", "Country", "The", "&", "Tennis", or "Beach")?? Otherwise Royal Lytham & Saint Annes Golf Club probably wins this sweepstakes!