A former imperial sea-fortress and Soviet prison.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

This park built on a former fortress has a reputation for romance.

The Guardian of Tallinn.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

"There's nothing there," and other lies the KGB told us.

This old KLM airplane cut into three parts was transformed into an eclectic airport gift shop.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This pink watchtower served as the seat of the Greek government after independence from the Turks.

This once private residence is now a popular wedding venue and training center for trade union officers.

The house in the middle of the motorway.

This bridge once allowed Dere Street to cross the River Tees.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

A replica memorializes the site where women were punished after the last witchcraft trial in Ireland.

Northern Ireland's Brobdingnagian stepping stones.

A trail of "Game of Thrones"-themed doors carved from fallen trees from the iconic Dark Hedges.

The atmospheric road was never meant to be so creepy.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

One of the largest lenses of its kind ever created, this former ship beacon has been brought down to Earth.

A towering steel-and-bronze figure whose playful nickname outshines its official message of hope

The statue honors a beloved bird that once roamed St. George's Market.

An abandoned shipping control tower looks like a satellite perched at the end of a pier.