A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

The bones of two medieval royal lions were discovered at the historic fortress.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

A close look reveals that the Scottish monument is just slightly off-kilter.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

This small museum in a 17th-century building honors three iconic Scottish writers.

The first archaeological site discovered by aerial photography.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

Hauled from the water's depths, Henry VIII's flagship is preserved in this capsule-shaped museum.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

This one has sailed five times as far as Sir Francis Drake's famous ship.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

The final resting place of soldiers' loyal canine companions.

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

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.