This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

A visionary precursor to the Internet made of index cards.

This is what trains will look like after the zombie apocalypse.

Museum in a swimming pool where the water still flows.

This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

Drink among marionettes at this pub inside a historic puppet theater.

Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

This bike path traverses the treetops.

This bike path was sunk below water level for maximum wonder.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

Descend into the tunnels to experience the life of a coal miner.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

The highest point in Belgium is a staircase to nowhere.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

This abandoned Belgian fortress is purposefully being left to nature.

This ghost town in Belgium will lose its street art when it ceases to exist.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

The Devil’s own choice when he needs a drink in Brussels.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Lavish royal estate punctuated with heated greenhouses.