Sana’a is the city where the US embassy in Yemen is located. This US embassy in Yemen will be able to issue you with a US visa to visit the US. You if have a fiancee in Yemen you can apply for a fiancee visa or a marriage visa if you are married to a citizen of Yemen.
The embassy also offers consular services such as birth and marriage registrations and they are also able to issue you a new passport. The contact details for the embassy and a map to the US embassy in Yemen is listed below.
US Embassy in Yemen
US Embassy in Sana’a Yemen
Address: Sa’awan Street, P.O. Box 22347
Telephone: (967) 1 755-2000
Fax: Main (967) 1 303-182 Consular (967) 1 303-175
Emergency only: (967) 1 755-2000 (press zero for extension)
Operating Hours: Sunday through Thursday from 8:30a.m. – 4:30p.m