Over time, this castle grew to encompass the entire island.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

An abandoned masterpiece of Soviet Brutalist architecture.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

A sculpture in Hyannis commemorates Chief Sachem Iyannough of the Mattachiest tribe.

Mural fragments and various sculptures honor the longtime artist.

Ice cream stand, snack bar, and time capsule of milk conveyance.

These structures serve as a memorial to one of Boston’s most ambitious and controversial urban redevelopment projects.

Interactive museum complete with costumed re-enactors and the only known surviving chest from the Boston Tea Party.

Dedicated to a colonial woman who was hanged for being a Quaker.

This statue intended for children to enjoy became a minor political spat.

Dedicated to one of the darkest moments in Irish history.

Artifacts of whaling, with both its perils and adventure, are housed in this museum in a former candle factory.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

The tennis legend used this racket while breaking the race barrier and becoming the first Black man to win the US Open.

A unique tribute to the chocolatey past that helped shape one British city.

These murals stand as reminders to the troubled history of this Northern Ireland city.

Northern Ireland's Brobdingnagian stepping stones.

A series of stained glass artworks that depict images of the hit TV show.

These engineering masterpieces are a dominant feature of the Belfast skyline.

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