1. Matera, Italy
Matera is a city in southern Italy that is known for its ancient cave dwellings, known as sassi. These cave dwellings were used as homes and churches for thousands of years, and they are now a UNESCO World Heritage Site. Visitors can explore the sassi and learn about the history of this unique city.

2. Rila Monastery, Bulgaria
The Rila Monastery is a stunning Orthodox monastery that is located in the Rila Mountains of Bulgaria. The monastery was founded in the 10th century and is known for its beautiful frescoes and architecture. Visitors can explore the monastery and learn about the history of the Bulgarian Orthodox Church.

3. Kotor, Montenegro
Kotor is a small town in Montenegro that is located on the coast of the Adriatic Sea. The town is known for its beautiful architecture and stunning views of the sea and mountains. Visitors can explore the old town and hike up to the fortress for panoramic views of the area.

4. Hallstatt, Austria
Hallstatt is a small village in Austria that is known for its beautiful alpine scenery and historic salt mines. Visitors can explore the village and learn about the history of salt mining in the area, or take a boat ride on the lake for stunning views of the surrounding mountains.

5. Sintra, Portugal
Sintra is a town in Portugal that is known for its stunning palaces and castles. Visitors can explore the historic town center and visit the National Palace of Sintra, the Castle of the Moors, and the colorful Pena Palace.

6. Zakopane, Poland
Zakopane is a mountain resort town in southern Poland that is known for its stunning alpine scenery and traditional wooden architecture. Visitors can explore the town center and take a cable car up to the top of Kasprowy Wierch for panoramic views of the area.

7. Guimaraes, Portugal
Guimaraes is a historic city in northern Portugal that is known for its medieval architecture and castle. Visitors can explore the old town and visit the Castle of Guimaraes, which was built in the 10th century.

8. Sighisoara, Romania
Sighisoara is a small town in Romania that is known for its well-preserved medieval architecture and fortified walls. Visitors can explore the old town and visit the Clock Tower Museum for stunning views of the surrounding area.

9. Gdansk, Poland
Gdansk is a historic city in northern Poland that is known for its beautiful architecture and rich history. Visitors can explore the old town and visit the Museum of the Second World War for a deeper understanding of the city’s past.

10. Kilkenny, Ireland
Kilkenny is a small city in Ireland that is known for its medieval architecture and rich cultural heritage. Visitors can explore the historic town center and visit Kilkenny Castle, St. Canice’s Cathedral, and the Smithwick’s Brewery for a taste of the local beer.