Game of Thrones Filming Locations in Split: The Complete Fan Guide

Diocletian's Palace is not a museum exhibit. It is a living district of the city where roughly 3,000 people still live and work inside the original Roman walls. Apartments, restaurants, and bars occupy spaces that were built in 305 AD. That quality — ancient architecture used continuously, not preserved behind glass — is exactly what gave Game of Thrones its visual authority.

The production needed a city that looked simultaneously ancient and functional. The substructures of Diocletian's Palace, the vaulted underground halls built as a platform for the imperial apartments above, became Daenerys's dragon pits and the dungeons of Meereen. The scale and condition of these spaces made CGI additions look believable in a way that purpose-built sets rarely achieve.

The basement halls of Diocletian's Palace are one of the best-preserved examples of Roman substructure construction in existence. They mirror the layout of the imperial apartments that once stood above — essentially a complete Roman floor plan preserved underground.

In Game of Thrones, these spaces appear across Seasons 3, 4, and 5. The most memorable: the scene in Season 4 where Daenerys chains Rhaegal and Viserion in the pits as she loses control of her dragons. The vaulted ceilings and stone columns of the actual location are unmistakable to fans who know the show.

What makes the experience interesting is that the substructures are genuinely atmospheric without any GoT context. They are a significant ancient monument in their own right. A guided walk that connects the filming context to the actual Roman history gives you two layers of interpretation at the same time.

A quality Game of Thrones walking tour in Split does not simply point at spots and name episodes. The best guides carry tablets or high-quality prints showing the exact scene filmed at each location, so you can compare what you see with what appeared on screen.

A good tour typically covers the substructure filming locations, the peristyle courtyard, the Vestibule, and the exterior walls — connecting each to both GoT scenes and the actual Roman history of the site. The double layer of interpretation is what makes it work for both fans who have watched every episode and for visitors who have never seen the show but want to understand the palace.

The walk usually takes 90 minutes to 2 hours for a thorough version. Smaller groups allow the guide to spend time at each location rather than rushing people through.

Diocletian was one of the most significant Roman emperors — the man who ended the Crisis of the Third Century, split the empire into administrative halves, and then voluntarily resigned from power to grow cabbages on the Dalmatian coast. His retirement palace was essentially a small fortified city: 30,000 square metres, walls 2 metres thick, and accommodation for an entire imperial court.

When the Western Roman Empire collapsed, the city of Salona was abandoned and its population moved inside the palace walls for protection. Split grew from that occupation — the city literally formed inside the palace's footprint, building on top of, around, and inside the Roman structure over 1,700 years.

Understanding that history makes the GoT locations more interesting, not less. The dungeons where Daenerys kept her dragons were originally built to support the private apartments of a Roman emperor. That layering of meaning — Roman palace, medieval city, modern neighborhood, HBO set — is what makes Split genuinely unusual.

The substructures of Diocletian's Palace are open to visitors with a paid entry ticket. The eastern halls are larger and more frequently used for events, while the western halls offer a quieter experience. Early morning (before 9:00 AM) and late afternoon (after 5:00 PM) offer the best conditions for photos without crowds.

A guided walking tour adds the GoT overlay plus the historical context. Self-guided visits miss the specific scene connections unless you prepare well in advance — bring reference images from the show to compare at each location.

The walk involves uneven stone paving and some low ceilings in the underground sections. Comfortable shoes are essential. The substructures are not air-conditioned, so morning visits are significantly more comfortable in July and August.