This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

One of New Zealand’s few castles boasts beautiful gardens, grand architecture, and a history filled with family drama.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A remarkable medieval structure born from a 14th-century disaster.

This demon atop the Notre-Dame de Paris looks utterly bored.

The Giant Lemon of Lemon Grove.

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

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

A quiet memorial to those who died saving others in the heart of the City of London.

A six-ton wedding present for the King of the Scots.

The Avenue of Mausolea is a series of grand palatial tombs.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

A statue erected in honor of the toadish nickname given to Jersey residents by the French.

Elevated freight railway turned wildly successful urban park.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

Twice a day, the water of the Petitcodiac River flows upstream in a surfable wave.

Cape Breton landmark filled with recognizable faces.

This historic cemetery stopped accepting bodies before many Canadian cities were founded.

The world's longest covered bridge is a quaint and incredible wooden tunnel.

A contemporary fresco movement illustrates the region's rich history.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

One of the largest underground systems runs under Canada's largest urban center.