7 letters, 5 syllables, geographic name

It's Monday, so let's start the week off right--with the Sunday puzzle from NPR:

This week's challenge: Think of a well-known seven-letter geographical name in a single word that has just two consonants and yet is pronounced in five syllables.

Wow, that's two weeks in a row with a puzzle that breaks the usual transform thing from Class A to get another thing from Class B format! How should we approach this one? What do we need?

• Lexicon
• If we have a sufficiently large list of words, we can iterate through to find any items that are 7-letters and contain exactly 5 vowels.
• "geographical name": I understand this to mean a place name like "Atlanta" or "Borneo".
• Some of the lexicons we've used in the past might be light on proper names, so we may want to look for something called a gazeteer. These days, a gazeteer is usually just a list of place names, but the name comes from the index printed at the end of an atlas.
• Pronunciation dictionary
• Let's imagine our orthographic search returns 1,000 results of 7-letter, 5-vowel names. With such a large list of results, it would be helpful to run these results through a pronunciation dictionary and return only those with 5 syllables.
• More likely, our search is going to return a much smaller number of results, in which case we can skim through them manually to find the real solution to the puzzle.

Well, that's going to be my approach, and I've got a script started on GitHub that might help you out. Leave a comment if you have a different idea. Good luck and I'll be back after the deadline to share my solution!