MHQ meaning in Airport Code ?

Mariehamn (, Finland Swedish: [mɑriːeˈhɑmn] (listen); Finnish: Maarianhamina [ˈmɑːriɑnˌhɑminɑ]; Latin: Portus Mariae) is the capital of the Åland Islands, an autonomous territory under Finnish sovereignty. Mariehamn is the seat of the Government and Parliament of Åland, and 40% of the population of Åland live in the city. It is mostly surrounded by Jomala, the second largest municipality in Åland in terms of population; to the east it is bordered by Lemland. Like all of Åland, Mariehamn is unilingually Swedish-speaking and around 88% of the inhabitants speak it as their native language.

The theme of the coat of arms of Mariehamn refers to the city's main livelihood, a maritime transport, and the city's parks, which are typically lined with linden trees. The coat of arms was designed by Nils Byman and confirmed in 1951.