A relic of Victorian grandeur hides beneath a busy South London road.

The remains of Crystal Palace Great Exhibition of 1851.

Remnants of a Victorian garden feature sitting in public woodland.

Pop culture has helped to keep this iconic British building from being destroyed.

Shiny Brutalist box commemorates a pioneer of electricity and houses a railway transformer.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This unusual 7th-century Frankish seal offers more questions than answers about its past.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

A complicated contraption for telling time by the moon.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

Morocco's largest Jewish cemetery.

Numerous impressive carvings are embedded in the trees lining this street in Marrakech.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

The Guardian of Tallinn.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

Flamboyant architecture from the turn of 20th century.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

A black cat protests the City Guild in Riga's Old Town.

The oldest housing complex in Riga is a mini timeline of architectural trends.

This unassuming building produced some of the world's most famous bells.