I'd have to look it up to be 100% positive, but I believe in the US no landmark can have an apostrophe in its name if it's used as an address. For example, if you live on an American version of Prince's Highway, it would have to be named Princes Highway on all roadway signage, etc. and in all mail that went to your house. IIRC the Postal Service deleted the apostrophes from street locations around the same time they forced us to abbreviate all the states with two, capital letters (ex: "FL" rather than "Fla." for Florida).
The only exception is the island of Martha's Vineyard, which supposedly got this carve-out due to all the rich, highly-connected politicians who live/vacation there and approve all the Postal Service's funding every year....
