One of the largest mechanical models of the solar system in the world.

The remains of the oldest synagogue in Britain lay forgotten for seven centuries, hidden under a humble shop.

Two women with a flair for both adventure and artful clutter created this singular round home.

This Scottish castle has witnessed clan rivalries, Jacobite uprisings, whisky smuggling, and more.

A complicated contraption for telling time by the moon.

The excellent acoustics of this natural amphitheater made it a popular preaching spot for the founder of the Methodist Church.

Once the largest unsupported dome in the world, beating out the Pantheon and St Peters in Rome.

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

A quartet of rusting satellite goliaths are all that remain of a communication network that protected Britain from German and Russian air strikes.

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

The world’s only museum dedicated to baked beans.

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

There's a strange stone hoodoo towering atop a wooded hillside and no one is quite sure how it got there.

A miniature village mimics the surrounding buildings so well it includes itself.

This enormous secondhand bookstore inside a Victorian train station sparked the "Keep Calm and Carry On" craze.

The ornate structure is part of a building boasting more marble than the Vatican.

This amazing 15th-century mural remained hidden in plain sight for centuries.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

This surreal art house looks like a geometric version of a small chapel.

A brick foundation and piles of listing building materials are all that remains of this World War II POW camp.