Places meltingknight Wants to Go

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

The Tudor-style cottage in the middle of the square is not quite what it seems.

The 14th-century ruins are said to contain healing powers.

A remains of a stone shelter are a reminder of "The Worst Journey in the World."

This massive Trojan ursine was built to be a new tourist symbol for a small Swedish town.

This statue, deep in a Swedish forest, is all alone, just like the renowned recluse would have wanted.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

One of the largest and oldest caravansaries in Persia.

An abandoned 14th-century castle and prison complex on a small island in the Neva River.

This pink watchtower served as the seat of the Greek government after independence from the Turks.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

An ingenious Dutch land art project uses grass ridges to cut airport noise pollution in half.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

A whimsical menagerie of creatures carved into a 300-year-old tree trunk.

The world's largest collection of garden gnomes lives among the trees and wildflowers on this woodland reserve.

This amazing trail among the many waterfalls around Ingleton has been enchanting visitors since 1885.

Years of neglect and nature took a toll on this 19th-century lighthouse.

One of the earliest large-scale "hyper" roofs in the U.K. is now a derelict roadside attraction.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

A Roman monument to their own civil engineering prowess.

A giant portrait of an ancient king looms over the river.