Megachurch turned Catholic church comprised of 10,000 glass panes.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

A gated cross stands on the site where an Irish revolutionary met his end.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

A stunning Victorian abbey and walled garden on a lakefront.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

An unusual round church in London with a Templar past.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Dictionary Johnson’s favorite feline.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

No one is sure what to do with this WWII shipwreck that sits at the bottom of the Thames, still loaded with tons of explosives.

A jumble of treasures in a small space, this old-fashioned local museum is full of surprises.

This skewed English house has looked like it's going to fall over for centuries.

The history and future of cannabis.

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

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The world's only museum devoted to the wonders of fluorescence.

The last of Amsterdam's original sea level markers remaining in place.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A new sculpture calls attention to climate change in the centuries-old city it threatens.