Catedral de la Almudena

While ground broke on Madrid’s cathedral in 1883, it was not consecrated until 1993, making it one of the youngest of Europe’s grand cathedrals, though no less spectacular (thanks to design details like a small globe rendered in stained glass or the shockingly intricate details lining the ceiling).

Located right next to the Palacio Real, it costs only a one euro donation to enter and is absolutely worth the stop for travelers visiting the palace. Those with a bit more time may consider visiting the crypts, climbing the tower or popping into the cathedral’s museum (which is closed on Sundays). The tower is only accessible from the museum, so visitors hoping to climb it must go when the museum is open.

Note: During services, access to both the cathedral and the crypts is limited.