<select name="cities" class="select__input form-control" id="my-cities">
<ymaps>
<ymaps>
<option value="Воронеж">Воронеж</option>
</ymaps>
</ymaps>
<ymaps>
<ymaps>
<option value="Владивосток">Владивосток</option>
</ymaps>
</ymaps>
<ymaps>
<ymaps>
<option value="Астрахань">Астрахань</option>
</ymaps>
</ymaps>
</select>