Four antique Baldwin trains are kept on display in the Mal Tiempo train depot.

This ornate Weser Renaissance house was also the home of an infamous witch hunter.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.

A plaque commemorates a Victorian scientist's monumental discovery about waves.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Some cheeky plantings brighten an old slipway on Scotland's Firth of Forth.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

An abandoned, desolate train tunnel that was used during World War II.

This abandoned hospital village was once viewed as an innovative way to deal with mental illness.

These plaques located in a court preserve a small piece of Edinburgh's history.

A museum of co-operativism housed in the birthplace of the modern movement.

The first Chinese student to graduate from a European university.

This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.

These trenches were used to train the Scottish military for life on the frontlines of World War I.

This unassuming shed was the stage for a monumental event in British history.

This monument is dedicated to a young boy who survived a disaster that forced Edinburgh to reevaluate its building codes.

This ordinary-looking mailbox has a rather explosive history.

Neon artworks light up this dark Edinburgh tunnel.

One of Edinburgh's most popular works of street art is located well off the beaten path.

An iconic red telephone box turned tiny art gallery.

A former telephone box found new life as a photo booth and charity fundraiser.

This former train tunnel is filled with lines from a poem crafted by Robert Louis Stevenson.

An artist's whimsical transformation of everyday objects.