Ljubljana, the capital of Slovenia, is a lovely city with a lot to offer. Here are some of the best things to see and do in Ljubljana:

1. Ljubljana Castle: This castle is a must-visit attraction in Ljubljana. It offers stunning views of the city and houses a museum, art gallery, and restaurant.

2. Preseren Square: This is the main square in Ljubljana and is named after the famous Slovenian poet France Preseren. It is a great place to relax and enjoy the atmosphere of the city.

3. Triple Bridge: This is a group of three bridges that span the Ljubljanica River. It is a popular spot for taking photos and enjoying the views of the river and the city.

4. Tivoli Park: This is the largest park in Ljubljana and is a great place to relax and enjoy nature. It has walking paths, playgrounds, and a botanical garden.

5. Dragon Bridge: This is a unique bridge in Ljubljana that is decorated with dragon statues. It is a popular spot for taking photos and is considered one of the citys symbols.

6. Ljubljana Old Town: This is the historic center of Ljubljana and is full of charming streets, squares, and buildings. It is a great place to explore on foot and discover the citys history and culture.

7. Union Experience: This is a museum that tells the story of the Union brewery, which has been producing beer in Ljubljana since 1864. It offers tours and tastings.

8. House of Illusions: This is a museum of optical illusions that is fun for all ages. It offers interactive exhibits and is a great place to take photos.

9. Metelkova: This is a former military barracks that has been turned into a cultural center. It is full of street art, bars, and music venues and is a popular spot for nightlife.

10. Central Market: This is a lively market in the heart of Ljubljana that sells fresh produce, flowers, and souvenirs. It is a great place to experience the local culture.

In addition to these attractions, there are many other things to see and do in Ljubljana, such as taking a day trip to Lake Bled or Lake Bohinj, visiting the Ljubljana Zoo, and exploring the citys Art Nouveau architecture.