A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

Recently restored menagerie of Victorian-era beasts.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

The cedar tree in Highgate Cemetery earned its title by accident.

This Roman relic was discovered in Scotland by a mudlarking ferryman.

A medieval cave used to shelter local hermits now holds nearly 200 old Quaker gravestones.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

A medieval device used to punish and shame wrongdoers still hangs outside the village church.

This massive monument has been telling the time for 150 years—at a slight angle.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

This tiny weathered plot is one of the oldest Jewish cemeteries in Scotland.

A beautiful Greco-Roman structure houses a well once believed to have healing powers.

The house where the writer spent his formative years.

Though they've since been renamed, these two streets hint at Dublin's darker days.

A relic from a forgotten bakery chain still spins atop a diner.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

This small monument to the great inventor contains a time capsule and a Wi-Fi hotspot.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

The blinking light atop the iconic landmark has been sending secret messages for decades.

This municipal playground was co-created by the father of one of the most playful characters ever.

One of the most elaborate displays of Jellyfish is on display at the aquarium.