This ancient hydrological marvel is now the base of a modern outdoor cinema.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

What once sat in the world’s spotlight is today a largely disused ghost complex.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

Step inside an ancient beehive tomb built for a mysterious cult hero.

Built by the Ancient Greeks, this chariot bridge is still in use today.

This legendary city has been a tourist attraction for centuries.

A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

The historic tower houses of this nearly abandoned Greek town have been compared to the spikes on an iguana's back.

Get hands on with the technological marvels of the Classical world.

A network of concealed passageways lies within a busy London Underground station.

The sculpture of the deceased cockatoo flops atop its personal plinth.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

A clock designed to run with perfect accuracy for 10,000 years.

Abstract dinosaur models in London.

A bench and a bridge pay tribute to Birmingham's favorite heavy metal band.

A hidden gem in the middle of the city's infamous Jewelry Quarter.

An ancient woodland that inspired a young J.R.R. Tolkien.

This ornate English estates "Prodigy House" still bears the cannonball marks of civil war.

This historic abandoned train station looks like a stop for ghost trains.