You see, the parking here is horrendous.
The Roman Emperor Diocletian was proclaimed Emperor in AD 284. He built this palace as his retirement home. Eventually, he died and was buried in the mausoleum in the middle of the Diocletian Palace. A few hundred years later, in the 7th century, nearby residents fled into the palace to escape from invaders. Since then, the palace has continually been occupied. This probably explains why much of the palace is still standing. Today, it is a UNESCO World Heritage monument.
When the palace was built, it had the perfect and elegant proportions of a royal dwelling. However, when people moved in, they began building their own stone houses hither and thither. The extensive gardens disappeared only to be replaced by a veritable warren of buildings with narrow streets. The grand vistas and walkways also disappeared. Large windows were bricked up. When one marble pillar collapsed, people dragged another marble pillar (of different colour and design) from nearby ruins in Salona and popped it in there to support the roof. It really is a very amusing construction.
See the row of pillars on the right? Originally, one could walk through into a wide space there.
In later years, after the Romans had abandoned the site, someone built a building right there behind the pillars. I am of 2 minds about this. It seems such a travesty to destroy the initial aspect of the dwelling but then again, these newer building additions are also the sole reason why those pillars still stand and are well-preserved today.