The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Reminders of the Battle of Berlin still scar the railway.

A towering monument to war, located on a beautifully peaceful hill.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

The only microgravity tower in Europe can produce nine seconds of weightlessness.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

This Old Testament garden features 100 plants from biblical times.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.