Start your adventure with a hike up Cave Hill, where you'll be rewarded with panoramic views of the entire city. The trail takes about 2 hours to complete and is moderately challenging. In the afternoon, head to We Are Vertigo for indoor skydiving and trampolining. If you still have energy left, check out the Titanic Quarter in the evening, where you can learn about the ill-fated voyage of the Titanic and explore the restored shipyard.
Take a day trip to Tollymore Forest Park, where you can go hiking, mountain biking, and horseback riding. The park is also home to a number of Game of Thrones filming locations, such as the Haunted Forest and the Stark family's campsite. In the evening, return to Belfast for dinner at Made in Belfast, a trendy restaurant known for its locally-sourced ingredients and unique decor.
Start the day with a visit to Belfast Castle, a historic castle built in the 19th century that now houses a restaurant and visitor's centre. From there, head to Colin Glen Forest Park for ziplining and a high ropes course. Finally, end your adventure with a visit to the Ulster Museum, which features exhibits on Irish history, art, and culture.
If you have extra time, consider taking a day trip to the Giant's Causeway, a UNESCO World Heritage Site located on the northern coast of Northern Ireland. Another popular activity in Belfast is visiting the Crumlin Road Gaol, a former prison that now offers guided tours. To maximize your fun, be sure to wear comfortable shoes and bring plenty of water and snacks for your outdoor activities.