When you're a great Russian Tsar, even your vomit gets a statue.

The second-largest Jewish temple in Bulgaria was deserted after World War II, seized by the communist government and then abandoned again.

A visionary precursor to the Internet made of index cards.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.

This abandoned Belgian fortress is purposefully being left to nature.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

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

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

Medical history with an amazing, if frighting, collection of wax diseases on display.

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

Lavish royal estate punctuated with heated greenhouses.