Day 1 – Arrival in Zagreb & Underground Echoes

• Arrival in Zagreb and transfer to your hotel

• Introductory walking tour through Austro-Hungarian architecture and WWII-era bunkers beneath the city

• Visit to the Croatian Museum of Naïve Art or optional detour to the Medvedgrad Fortress for forest views

• Welcome dinner in a local tavern and orientation

• Overnight in Zagreb

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Day 2 – Željava Air Base & Plitvice Wilderness

• Drive south to the Bosnian border for an in-depth visit to Željava Air Base, a vast abandoned Yugoslav military complex dug deep into the mountain

• Explore the decaying aircraft hangars, overgrown runways, and Cold War remnants with a local guide

• Continue to Plitvice Lakes National Park, late afternoon hike along wooden paths above turquoise waterfalls (avoiding peak hours)

• Optional wildlife tracking walk in the surrounding protected zones (home to lynx, wolves, and bears)

• Overnight near Plitvice in a rural guesthouse

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Day 3 – Velebit Mountains & Rock Carvings

• Depart for the Velebit Nature Park, Croatia’s wildest and most biodiverse mountain region

• Hike to Paklenica’s prehistoric rock art sites and explore hidden WWII bunkers carved into the cliffs

• Visit the abandoned meteorological station atop Velebit’s ridge for panoramic views of the Adriatic and hinterlands

• Late afternoon descent and transfer to coastal town of Senj or Karlobag

• Overnight in a small coastal guesthouse or mountain retreat

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Day 4 – Forgotten Coastlines & Return

• Explore lesser-known coastal ruins or abandoned villages tucked into the cliffs above the sea

• Optional stop at Jablanac’s submerged war ferry wreck or a short coastal cave kayaking trip

• Return to Zagreb (or transfer to Split/Zadar for onward travel) via scenic inland route

• End of tour