A student driver's nightmare.

One part local history, 99 parts gruesome haunted house.

The longest hedge maze in the world.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Northern Ireland's Brobdingnagian stepping stones.

The world's largest collection of witchcraft regalia.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

The bears of Bern have been a city highlight for over 500 years.

The world's longest and deepest train tunnel.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

A giant roundabout made up of six smaller roundabouts can befuddle the uninitiated.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

A medieval church built up to defend its village.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Something's watching you.

Romania's triumphal arch looks out over Bucharest.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

The mummified relic of St. Antoninus.