This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

A small but very fascinating fountain in the center of Rome with four books and a deer carved.

This is the oldest Roman-made bridge in the city still existing in its original state.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

A freedman baker’s lavish tomb has a relief showing various stages of Roman bread making.

A monument to a Russian cruiser near its final resting place off the Ayrshire Coast.

Legend says this cave housed a 16th-century cannibal and his family of 48.

Near this coastal cave stands a small memorial to the hermit who made it his home for three decades.

A 200-year-old collection of oddities and medical paraphernalia.

Inside this art museum resides one of Glasgow's most famous musical instruments.

The last water-powered beam pumping engine in Britain.

Now in ruins, this castle stood for centuries and saw a number of gruesome events.

These unique weather vanes honor Scotland's most famous bard and decorate this walkway.

The lasting remains of a bygone era of open-air meat markets.

This historic timepiece was a popular meeting place for romantic rendezvous in the 1960s.

This painting of a beloved dog will be on display at the Scottish National Gallery at long as the museum exists.

A miniature of a lighthouse acts as a beacon for what transpires inside this location.

A recreation of pop art pioneer Eduardo Luigi Paolozzi's London studio.

If you fly into Edinburgh Airport, it's possible to spot this prehistoric site without even getting off the plane.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

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

The remnants of a facade from a 19th-century market stall emporium.