One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

You don't have to be an ambassador to dine like one.

Eat a Nobel banquet from any year in the basement of Stockholm's City Hall.

A 115-year-old restored German dining hall awaits those who venture beneath the Minnesota State Capitol.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

The first ever diner included on the National Register of Historic Places is famous for its custard French toast.

A tunnel with windows, so you don't miss out on the impressive views.

Designed as a labyrinth, this subterranean prison was crafted without bars or doors.

Inside this museum is an ongoing excavation of an ancient shipwreck.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

An abandoned stretch of elevated road in the middle of the Brazilian jungle.

A historic steam train meanders along one of the most scenic rail routes in Germany's Black Forest.

A tiny, intricate model railway system.

An ornate private entrance to the Vienna subway built specifically for the emperor.

The world's longest tunnel with an undersea section.

This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

An amazing collection of model trains, collectibles, and artifacts that span the last 100 years.

A cool dive bar, off the beaten track.

A decommissioned tube carriage within a London museum hosts a regular pop-up supper club.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Known as the most scenic route in Sri Lanka, this train line is steeped in history and offers an unparalleled view of the country.

The last surviving roundhouse in the United Kingdom also plays host to a popular annual beer and music festival.