A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.

Feast on Middle Eastern mezze from an Israeli expat duo.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

This historic London residence was once the womb of Scientology.

Even though some of the buildings date back to the Victorian era, this research institute is still involved in cutting-edge astronomy research.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

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

This snug medieval lane is one of the narrowest streets in the world.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

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

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

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

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Something's watching you.

Cathedral-like Victorian vaults are hidden within this iconic bridge.

Romania's triumphal arch looks out over Bucharest.

A harrowing sculpture commemorates the four people shot down during the workers strike of 1842.

Everyone's favorite clay duo immortalized in bronze.

This Bronze Age boat was found buried remarkably intact in an English gravel pit.

The longest stone bridge in England has an impressive history that dates back over 700 years.