The superlative singles out one item from the rest or a group of items from the rest, so it always includes the word “the.” In Spanish, of course, “the” can be masculine or feminine, singular or plural, so you will use
(the most/least important monument)
(the prettiest, most/least beautiful church)
(the most/least interesting streets)
(the tallest/least tall buildings)
To talk about the “best” and the “worst” places, you use the definite article followed by
Translate the following list of the top five highlights of Quito, Ecuador.
Then check your answers in Appendix D.
the best fountains
the most beautiful church
the most historic neighborhood
the most interesting streets
the biggest museums
If you want to warn someone about the worst of Quito, translate the next five examples and check your work in Appendix D.
the ugliest plaza
the worst restaurant
the worst places
the least interesting museum
the least beautiful streets