رَأَيْتُ بَعْلَبَكَّ — I saw Baalbek.
رَأَيْتُ: past verb with a connected nominative subject pronoun.
بَعْلَ: first component, built on fatḥ.
بَكَّ: second component with visible accusative fatḥah; the whole name is the direct object.
The first fatḥah is indeclinable structure; the last fatḥah marks accusative case. They look alike but do different jobs.