The following are some tourist destinations that do not require tickets and are suitable for self-guided tours:
1. Parks and gardens: Many cities have beautiful parks and gardens, such as Central Park , Hyde Park, etc. You can stroll, have a picnic or just enjoy the scenery in these places.
2. Street Art District: Some cities will have street art districts, such as the East Side Gallery District in Berlin and Brooklyn in New York. You can admire the works of street artists and explore the unique artistic atmosphere.
3. Markets and bazaars: Visit local markets or bazaars to experience local culture and shopping. These places usually have a variety of unique merchandise and foods.
4. Natural landscapes: Explore natural landscapes such as mountains, lakes, beaches, etc. Hike or bike and enjoy the beauty that nature has to offer.
5. Cultural neighborhoods: Many cities have neighborhoods full of cultural atmosphere, such as the Montmartre district in Paris and the Camden district in London. You can wander around and admire the architecture, art and cultural sites.
6. Free museums: Museums in some cities offer free admission, so you can visit exhibitions and learn about history and art.
In addition, you can also feel the charm of the city by participating in local festivals, exploring street food, and experiencing local traditional crafts. Remember to check the tourist information of your destination in advance to ensure that your trip is arranged smoothly.