Berliner Dom (Berlin Cathedral), Berlin (must see)

Despite its name, the Berlin Cathedral has never functioned as a true "cathedral" in the conventional sense because Berlin itself has never served as the seat of a Catholic bishop. The site has hosted a church since 1536, but the colossal Neo-Baroque iteration we see today dates back to 1905, earning its distinction as the largest 20th-century Protestant church in Germany. With dimensions of 114 meters in length, 73 in width, and a towering height of 116 meters, it dwarfed any previous structure in Berlin and was regarded as a Protestant counterpart to Saint Peter's Basilica in Vatican City. The entire construction cost of 11.5 million marks was covered by King Wilhelm II.

Until 1918, the royal Hohenzollerns worshipped within these grand walls, marking the end of that era when Wilhelm II abdicated and departed Berlin for Holland. Fast forward to the aftermath of the World War II chaos, and the massive dome found itself in dire need of a makeover, a task that didn't wrap up until 1982. Then, to put the cherry on top, the interior received its finishing touches in 1993, emerging as a true gem known for its magnificent organ, exceptional acoustics, priceless artworks, and transcendent ambiance.

Ascending to the dome provides a rewarding vista, and the journey is facilitated by a roomy stairwell, plenty of landings decked out with vintage snapshots and models, and even a few seating areas for those who like to take it easy. Meanwhile, down in the crypt, you'll find 94 sarcophagi of Prussian royals – it's like a history nerd's dream come true, and you can practically hear them whispering their secrets.

Tips:
Consider investing in the audio guide for a nominal fee, providing a wealth of fascinating information, or opt for a printed guide at a modest cost. During the summer, a generous open lawn with a fountain across the street offers an ideal setting for a picnic.