To make your map interactive and informative, you can attach popups to markers in Leaflet. A popup is a small overlay that displays additional information when a user clicks on a marker. This is useful for providing context, details, or instructions directly on the map.

To bind a popup to a marker, use the bindPopup method. This method takes a string of HTML or plain text, which will be shown inside the popup. For example, you can display a location name, a short description, or even styled content using bold tags and line breaks. In the provided code, the popup content uses <b> tags for emphasis and <br> for a line break, making the information more readable.

When customizing popup content, keep your messages concise and focused. Use formatting like bold or lists if needed, but avoid overloading the popup with too much detail. Popups should enhance the map experience, not overwhelm users. For best results, make sure the popup content is relevant to the marker's location and easy to understand. Always test your popups on different devices to ensure they are accessible and display correctly.