Ok, just to make sure:
Dover is the capital of Delaware.
Annapolis is the capital of Maryland.
Trenton is the capital of New Jersey (the one correctly mentioned.)
Hartford is the capital of Connecticut.
And Harrisburg is the capital of Pennsylvania.
I think only Wilmington and Baltimore are being implied as being capitals in that post, unless it is just one big whoosh to me.
And I get to count Philadelphia, Baltimore, and New York City; they all briefly served as capital of the US (or housed the continental congress) at some point. I’ve also been to Corydon, Indiana, which was the capital before Indianapolis was established.
:smack: D’oh! I was having a brain fart yesterday. Of course I knew, deep down, that Annapolis and Dover were those capitals, respectively. 
I could have sworn we passed through Vaduz. This was 1986. Could it have then?
No, I guess not, as a little googling reveals it’s one of the few capitals in the world without an airport or railway station. I blame the passage of time affecting my memory. Possibly it was Schaan I passed through then?
I am certain, however, that the trucker drove me through Luxembourg City.
Going to be severe with myself here: will do only national capitals (have never been to the Americas, anyway) – and for the UK, will count only London, the “overall” capital.
London
Dublin
Paris
Brussels
The Hague *
Luxembourg
Bonn (pre-1990)
East Berlin (pre-1990)
Vienna
Prague (pre-1993)
Warsaw
Bucharest
Belgrade (my trips to “Yugoslavia” were when it was still indeed Yugoslavia; so am not counting visits to what became capitals after the country broke up).
New Delhi
Beijing
Harare
And – counting which, a bit of a stretch – Dushanbe: in the context of having landed there on a flight by Tajik Air in 1993 (no opportunity of getting out of the plane).
Per Wiki entry on “Schaan-Vaduz”: that is the name of the westernmost station on the rail route berween Switzerland and Austria which passes through Liechtenstein; Vaduz is 3.5km south of the village of Schaan with its station. Naughty suggestion – Siam Sam, per the station’s “double-barrelled” name, could you take that as letting you count Vaduz as a capital visited?
I believe I made an error in my list. I confused Liechtenstein for Luxembourg, so while i can have “Luxembourg City” I must remove Vaduz.
Nah, I probably shouldn’t. But I’m sure that’s why I thought I was passing through Vaduz.
Oh, and I said I visited Mexico City and Managua, which is true. And my flight from Mexico City to Managua and back stopped at Guatemala City and San Salvador, but I didn’t even get off the plane. That was during Sandinista days, and I recall a line of Salvadoran troops out on the tarmac in force, I guess to make sure no one tried anything funny. (It was an Aeronica flight, and tensions between the two countries were heightened at that time.)
In USA:
Augusta
Boston
Montpelier
Providence
Albany (Just in train station)
Sante Fe
Phoenix
Atlanta
Outside of US:
Quebec City
Halifax
San Jose
Santiago
Mendoza(Capital of Mendoza Province, Argentina)
Not very many in the US… Austin and Topeka is it, unless you count the little bit of Atlanta I’ve driven through to get where I was going (La Grange, GA).
Elsewhere, I’ve been to:
Amsterdam
London
Edinburgh
Brussels
Paris
Prague
Budapest
Rome
London, Paris, Washington, Muscat, Manama, Tokyo, Moscow, Edinburgh, Cardiff, Abu Dhabi, Doha, Bonn*, Madrid… I think that’s it. Weird; I’ve been to 32 countries but mostly not their capitals.
*it was still West Germany when I was there, so I assume this counts.
Btw, Annapolis is the capital of Maryland, not Baltimore.
A similar argument could be made about “the City of London”, barely a square mile with 7,000 inhabitants.
Taipei
Beijing
Prague
Washington DC
Austin
Harrisburg
Little Rock
Indianapolis
I used to live in Albuquerque, New Mexico, which bills itself as the Ballooning Capital of the World.
And now that I think of it, Gallup was called the Drunk Driving Capital of America. But I didn’t think the drivers were that bad.
Now for U.S. state capitals. Ones with asterisks were primary destinations; others were places I just passed through.
Olympia
Phoenix (airport only)
Salt Lake City
Denver*
Lincoln
Topeka
St. Paul*
Des Moines
Little Rock*
Atlanta
Tallahassee*
Raleigh*
Nashville*
Springfield*
Indianapolis*
Madison*
Columbus
Harrisburg*
Boston*
Providence
Trenton (?)
Annapolis*
Richmond
Charleston
I’m adding Oklahoma City in a few weeks.
I don’t get out as much as the rest of you guys…
Washington, DC
NYC
Raleigh, NC
Atlanta, GA
I hate to break it to you about NYC …
Ah, ok. I wasn’t sure about that.