Artifacts and memories from the Vietnam war, located in a place that experienced it first hand.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

Perhaps the most scandalous statue of America's first president.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

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

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Brisbane's manmade urban beach has enough water to fill five Olympic-sized swimming pools.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Australia's only intact colonial warship never saw action before being turned into a scenic wreck.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Singapore's landscaping project is home to 18 incredible Supertrees.

A sculpture serving as an homage to Pope John Paul II.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Da Vinci's equestrian statue, 500 years in the making.