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

A 17th-century church is nestled within the walls of a 15th-century ruin.

A silly medieval mural preserved on the side of a Viennese house.

This abandoned Greek island was the last active leper colony in Europe.

A small and quirky museum hidden inside a fence.

The final resting place for the remains of 143 Habsburg royalty.

This former insane asylum now holds a pathological anatomy museum.

A tiny, remote island packed with wonders both natural and geeky.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

You feel like you're in a forest, but you're actually walking amidst the branches and trunks of a single giant tree.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

Modern commuters still pass through this 2,000-year-old Roman archway.

A tiny traditional village keeps an ancient method of beekeeping alive.

No one is sure why this mysterious tradition started.

The largest of only eight working transporter bridges left in the world.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

This abandoned fishing settlement may well be the greenest village in the world.

A statue of the English poet for whom this Delaware town is named is ritually dressed in seasonally appropriate clothing.

Possibly the world's oldest rug, this Egyptian relic is woven entirely from ancient cat hair and once carried a mummified human foot.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

This sublime architectural marvel is a rare example of an expressionist church.

This whimsical winery by Antoni Gaudí looks ripped from the pages of a fairytale.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.