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The station closest to the embassy

Turning right from the station entrance, there's immediately a crossing

A train zipped past

Walk up these stairs after crossing

Turn right at the top

Keep going till you see this small crossing

next to a park entrance

cross that and then cross to the other side of the street

Turn right after the crossing and walk a few minutes till you see this gray building and turn into the alley

Keep walking

and walking

and soon Vietnam Embassy will be on the right

There's no sign or notice to tell people that they need to use the side entrance

Visa application office at top of the stairs

Single entry visa 6000Yen/US$67