Split

Sure, here's an ideal itinerary for 2 days in Split with indoor activities:

Day 1:

• Morning: Start your day with a visit to the Diocletian's Palace, a UNESCO World Heritage Site and one of the most impressive Roman ruins in the world. You can explore the palace's underground chambers, climb the bell tower for panoramic views of the city, and visit the Cathedral of St. Domnius, which was originally built as a mausoleum for the Roman emperor Diocletian.
• Afternoon: Head to the Museum of Croatian Archaeological Monuments, which is located in the historic Vranjic Palace. The museum houses a collection of artifacts from the prehistoric, ancient, and medieval periods of Croatian history, including pottery, jewelry, and weapons.
• Evening: For dinner, head to the Konoba Varos restaurant, which serves traditional Dalmatian cuisine in a cozy, rustic atmosphere. Try the grilled fish or the lamb cooked under a bell, and pair it with a glass of local wine.

Day 2:

• Morning: Start your day with a visit to the Ivan Mestrovic Gallery, which is dedicated to the work of Croatia's most famous sculptor. The gallery is housed in a beautiful villa that Mestrovic designed himself, and it contains over 200 of his sculptures, drawings, and paintings.
• Afternoon: Head to the Museum of Fine Arts, which is located in the historic Gripe Fortress. The museum houses a collection of Croatian and international art from the 14th century to the present day, including works by famous artists such as Ivan Meštrović, Vlaho Bukovac, and Emanuel Vidović.
• Evening: For dinner, head to the Zinfandel's restaurant, which is located in the Palace Judita Heritage Hotel. The restaurant serves modern Croatian cuisine with a focus on local ingredients, and the wine list features a selection of Croatian and international wines. After dinner, head to the Bacvice Beach Club for a nightcap and some live music.