In my understanding, Staten Island does have a subway, kind-of (finding out about the island’s railway status, past and present, was the project which alerted me to its odd-geography aspect). If I have things rightly, the island has one passenger rail line: St. George to Tottenville, 14 miles – part of what used to be a more extensive system. This line is third-rail electric, and run, like the NY subways proper, by the New York City Transit Authority. The line uses modified versions of the subways’ standard passenger stock, and is usually reckoned as an isolated, and all-above-ground, portion of the subway system.
Which leads to the trivia tidbit… Bristol, TN is closer, as the crow flies, to Canada than to Memphis, TN.
The northernmost point of Victoria is at the same latitude as the southern suburbs of Sydney.
As the crow flies, yes. But to drive it, Miami is a little closer.
Yes. In fact, a majority of the NYC subway system’s track miles are ABOVE ground.
That’s sort of special pleading. The Staten Island railway was not built by the companies responsible for the subways in the rest of Manhattan, and at first nobody thought it was going to link up with them. Then in the 1920s they thought somebody was going to build a tunnel under the Narrows (!) and finally link up with the subway system. So they electrified the system and started using standard subway trains. But the link-up never happened. So now they have a railway that looks like a subway and is operated by the same authority, but it still doesn’t connect with the rest of the system or go underground at any point. It’s like a case of convergent evolution, with the Staten Island railway as the dolphin to the ichthyosaurus that is the rest of New York’s Subway system.
Wow…wow.
That was my reaction too. This short video demonstrates https://www.youtube.com/watch?v=VpQwuGueeoA It’s not the most efficient route, but still 
The Kentucky bend has existed for as long as the boundary has been surveyed. The boundary parallel grew out of the old Virginia and North Carolina colonial charters, and when they surveyed it out to the Mississippi in the early 1800’s they made the delightful discovery that it intersected the Mississippi not once but three times.
At some point the river probably will shift. The Mississippi, via earthquake or flood, will cut across the neck of the meander. When that happens, the boundary will not shift with the river. The Kentucky Bend will remain in Kentucky, and look even weirder than it does today. The land connection to Tennessee will be a detached part of Tennessee west of the (new) Mississippi River. The Bend will be ringed to the north by an oxbow lake, which may or may not extend down to the KY/TN border. If it doesn’t, there will be a direct land connection between the Bend and Missouri.
I like this one. Not quite an exclave, but it’s connection to the rest of Austria is about 20 feet wide, along generally inaccessible mountain terrain. 
The most direct driving route between the two largest cities in New York State, New York City and Buffalo, passes through Pennsylvania and New Jersey.
Just an idle curiosity based question: Is there any place on Planet Earth where the old adage/saying “You can’t get there from here” is true?
Assuming there’s not such an actual place, what comes closest?
If it matters, I have no clue!
Yes, but the subways of the rest of New York City were originally built by three different companies or city entities, and to this day there is poor connectivity, redundancy, and incompatibility between the former IRT, BMT, and IND systems. The IND originally had no connections to the other systems. BMT and IND trains are longer and wider than IRT trains, so BMT/IND trains can’t fit in IRT tunnels and IRT trains are too narrow to safely use BMT/IND platforms. (I grew up along a IRT line in the Bronx, and I remember how weird the BMT train seemed the first time I took one to Coney Island, with a completely different seating layout.) The Staten Island line may not be physically connected to the rest of the system, but the IRT isn’t connected to the rest of the system either in terms of trains, only in that in some places you can walk between IRT and BMT/IND platforms within the same station. Other than that it’s not really that much of an outlier. The first time I took it I was struck by how similar it was to the rest of the system; I had expect it to be more different. All four rapid transit lines in New York are cases of convergent evolution, not just the Staten Island line.
Yes, I know all that. But although the IND, BMT, and IRT were built by separate companies, they were all commissioned by the city as subways. Why they ended up so different, and with incompatible train/tunnel sizes and with absurd duplications of routes in many areas (with unserved sections in others) I still do not know. It’s an example of incredibly poor planning or unresolved responsibilities. The Staten Island railroad was not part of that whole mess, but its own line with no underground route or similarity to the casrs of the subways, that was brought in later.
I have to challenge (pedantically) the second part: it looks to me like the border with Belgium is longer than either run of the two borders with Spain.
Good question. I’m sure the Canadian arctic is full of places that no human being has ever visited. If we restrict to places where people actually live, I’d suggest Pitcairn Island, or some other remote island that’s too small to have an airport would be the most difficult place to access.
If you mean that literally, then what you’re asking is whether there is any place on the surface of the Earth that a human cannot get to by any means. I would think that the most likely candidate would be the middle of some large volcanic caldera.
R’lyeh
Well, no, they weren’t all commissioned as subways, if by that you mean entirely underground systems. As has been said, most of the “subway” system is above ground. The Third Avenue El and other Els were entirely or almost entirely elevated even in Manhattan. I don’t see the fact that the Staten Island line is entirely above ground as a fundamental distinction. The IND is the only real “subway” system, with almost all of its track below ground. The Staten Island line is an oddity, but there are lots of other oddities in the system.
I feel that it was me who set off the dispute about the Staten Island rail line: I just couldn’t resist commenting – with it having been the assignment which I was doing, which brought Staten Island and its rail route (of whose existence I’d hitherto been unaware) to my close notice in the first place. As a Brit, I feel that I’m in no position to pontificate about US railroads / subways 
– can see where both sides are coming from in the difference of opinion.