A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Its collection includes a broad array of social, geographic, graphic design, and political history.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

The oldest statue in the Netherlands has survived relocation, bombardment, and burial.

The hands on this clock appear to be created by two workers sweeping debris into careful positions.

A bridge that has seen many reiterations over its lifetime.

An icon of International Style architecture on the outskirts of Rotterdam.

From afar it looks like someone's hat blew into the water, but closer inspection reveals a giant floating sculpture.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

An art installation memorializing a tram stop, which became a tram stop.

A giant yellow phallus sculpture hidden in the gardens of the Museum Boijmans Van Beuningen.

Four giant movable street lights decorate this modern Rotterdam square.

The Netherlands' first car tunnel has an unusually rectangular shape.

Inside this metro station is a section of the city's former medieval fortification.

Elegant marble and old vaults fill this historic Dutch bank turned office space.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

An enormous Polaroid picture adds an artistic flair to Rotterdam.

A modern reimagining of a medieval city gate.

A huge teapot illuminates a home for the elderly.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

A giant floating rubber duck-bunny painted with a different design every year.