The beautiful St. Stephen's Basilica is the biggest church in Budapest. The basilica can hold 8,500 worshipers and was built during the late 19th century. Built in the Neoclassical architectural style, the artistic detail is quite remarkable.
Entrance to the church is free and for the best views, you can pay a small fee to access the dome. Walk up the stairs (364 steps) or take the elevator up to the dome's observation deck for a 360º view of Budapest.
See more about this attraction here.