These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

This secret collection of the strange and occult was rediscovered in a forgotten room of an old house.

Legend says a primate-like cryptid prowls this otherworldy sliver of the Louisiana bayou.

Leave a button on the jacket of this iconic Seattle clown.

A giant Troll lurks under one of Seattle's oldest bridges.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

Caves full of Buddhist statues, incredible rock formations and a deserted lagoon.

The world's largest drain sits below the city of Kasukabe, Japan.

Where giant ships go to die.

Intensely colorful calcite pools in Southern China.

Two stunning 17th-century libraries and a cabinet of curiosities.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

The anatomical-pathological collection of a man who changed surgery.

Roadside collection of 65,000 signs.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

The atmospheric road was never meant to be so creepy.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.