Singapore's landscaping project is home to 18 incredible Supertrees.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

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

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

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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

An impressive armored bronze effigy marks the tomb of one of the medieval era's greatest warriors.

A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

This skewed English house has looked like it's going to fall over for centuries.

Labor provided by Great Depression-era programs restored these 25,000 acres in Tennessee.

Visit this playground of waterfalls, caves and sinkholes.