A Manhattan courthouse hides a small but scathing memorial to Holocaust injustice.

A hidey-hole sandwiched between cellphone, DVD, and jewelry stores features Tibetan delights.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

Ancient catacombs form the foundation for this Rococo orgy of a church.

The stunning interior of this Gothic church is covered in ornate gold details.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This giant sculpture made of trash is a critique of society's wastefulness.

Elaborate tile work in this railway station tells the story of Portugal.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Try not to get slimed in Tribeca.

The first piece of public art dedicated to LGBT rights.

The video game-themed street art first popped up in the French city.

Deliciousness abounds at a Guatemalan restaurant masquerading as a pizzeria.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Walk into the 19th century without leaving Brooklyn.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.