An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

Standing atop Wellington Hill is the world's tallest three-sided obelisk.

The largest greenhouse in the world is home to over one million types of plants.

Look closely and you’ll notice that the color changes a third of the way up the tower.

An overlooked memorial honoring the local Washington residents who died in World War I.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Quirky Welsh observatory unites art and science.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

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

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

This ancient Egyptian obelisk still bears the wounds of World War I.

The medieval woodcut-style artwork chronicles life in medieval London.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Eighty million natural history specimens call this gargantuan museum home.

Banksy's image of a naked man dangling from the window of a sex health clinic.

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

The celebrated eyesore created by starry-eyed sweethearts.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

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

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