Budapest is a city full of history and culture, and a perfect way to start exploring the city is by visiting Buda Castle. The castle, which dates back to the 13th century, is a UNESCO World Heritage Site, and visitors can explore the grounds for free. After taking in the beauty of the castle, head over to the Fisherman's Bastion, a neo-Gothic and neo-Romanesque terrace that offers stunning views of the Danube River and the surrounding areas. Continue your tour of the city by visiting Saint Stephen's Basilica, a stunning neoclassical church that houses the mummified hand of Hungary's first king.
One of Budapest's most beloved pastimes is visiting its many thermal baths. A great budget-friendly option is Szechenyi Thermal Bath, which offers several different pools, saunas, and steam rooms to enjoy for one low entry price. Once you've had your fill of relaxation, head over to Ruins Pub in the Jewish Quarter, a unique and funky bar built in the ruins of an abandoned building. Finish off your night by indulging in some late-night street food from one of Budapest's many food trucks or street vendors.
If you have more time: Visit the Parliament Building, which is one of the largest in Europe and a beautiful example of Neo-Gothic architecture. If you have less time: Skip Saint Stephen's Basilica and instead opt for the nearby Great Market Hall, one of the largest indoor markets in Europe where you can sample local foods and purchase souvenirs.