To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

Cozy basement bar sports an inventory of over 2,000 beers.

A gorgeous gilded tower houses what may be the world's largest collection of gin.

A 19th-century mansion houses the largest collection of gin in the European Union.

The world’s first dedicated cloud observation platform.

Just outside of Nairobi lies a large estate surrounded by endangered Rothschild giraffes, who have been fed from the window by Mick Jagger and Walter Cronkite.

Live a night as a Byzantine King, with a minibar and private jacuzzi.

This space age health spa looks like a supervillain's lair.

This abandoned five-star hotel is now a five-star urban exploration destination.

A decaying, yet still functioning, work of communist architecture.

Some believe this abandoned Brutalist masterpiece inspired George Lucas's Sandcrawler.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

The now-overgrown beach resort was once frequented by Yugoslav military elite.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Rent out a glass igloo to watch the Northern Lights like you live in the future.

Originally slated to become a luxurious resort, this structure is now a graffiti haunt reclaimed by nature.

A fortress built to pacify local uprising that had a stint as a Nazi concentration camp before becoming a five-star hotel.

The massive white mound and accompanying water terraces are a striking geological oddity.

Panoramic views from the mountains over a facility built to provide tuberculosis patients with fresh mountain air.

A unique Tuscan hideaway acts as an art mecca as well as a hotel.

The world's first ice hotel is still one of the most elaborate and beautiful.

This striking structure is the Socialist-modernist centerpiece of a former Soviet spa resort.