A replica memorializes the site where women were punished after the last witchcraft trial in Ireland.

A restored World War II Churchill Mark VII Tank now stands guard in Carrickfergus.

Celebrated in poem, this tiny hidden cemetery has a big and grisly history.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

An abandoned shipping control tower looks like a satellite perched at the end of a pier.

This mine was once used to defend the coast from attack during World War II.

Commemorating the landing of William of Orange with his European army on their way to the Battle of the Boyne.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

Belfast's namesake river still winds below the city center, hidden from sight.

This massive monument has been telling the time for 150 years—at a slight angle.

Originally commissioned as a sculpture to reflect the history of Belfast's red-light district, the final sculpture has been banned from Belfast public land.

The only monument to name all of the passengers and crew who died on the RMS Titanic.

Northern Ireland's church-turned-skate park.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

This painted Lego bridge is the product of over a century of locomotive history.

This "floating railway" is one of the world's oldest monorail systems.

Stained-glass windows inspired by Vincent van Gogh's paintings decorate this church in the town where the artist's career began.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

Theme park featuring miniature replicas of European monuments.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Climb inside an iron crystal magnified 165 billion times its normal size.

Lavish royal estate punctuated with heated greenhouses.