Frederik's Church, also known as The Marble Church (Marmorkirken in Danish), is a stunning Lutheran church in Copenhagen, Denmark. Designed by Nicolai Eigtved in 1740, it boasts the largest church dome in Scandinavia and draws inspiration from St. Peter's Basilica in Rome. This style of church is very uncommon in this part of Europe, but it is absolutely beautiful! You can visit for free as long as church services aren't in session.