Upon arrival, I noticed a manhole.
Curiouser and curiouser.
So of course, I clicked it (you can find the most entertaining things by clicking indiscriminately). I was not disappointed, the manhole cover opened obligingly, revealing a dark maw. I hopped right in. And fell quite a ways to land in a dimly lit underground cavern (World->Force Sun->Midnight for the best effect).
Luckily, in Second Life, one can breath underwater.
To the east was a large open area that I believe lies underneath the city streets. I followed the passage to the west, past some unusual artifacts...
I wonder if the driver managed to phone home for assistance.
...through a grate to the equally unusual basement room of The Lion and the Setting Sun. Which contained, among other things, an avatar-sized specimen cage.
I quickly located the exit at the opposite end of the room and found myself beside The Lion and the Setting Sun, Miss Hauptmann's workshop. I poked around, taking note of several intriguing gadgets and the boxes of textures along the wall. I also perused the available reading materials to discover that Miss Hauptmann is "the last 'daughter' of Doctor Moreau. He was delicious." This information does explain the items in the basement...
Telehub, Caledon Tanglewood (128, 207, 22)
Ferry Landing - Tanglewood side, Caledon Lionsgate (138, 248, 22)
Manhole at the Pier, Port Caledon (149, 122, 22)
The Way Out, Port Caledon (111, 194, 22)
The Lion and the Setting Sun, Port Caledon (123, 175, 23)