Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

Perhaps the most spectacular grotto along the Algarve coastline.

This charming candle shop has been in business since 1789.

The world's oldest bookshop still in operation.

Europe's largest collection of matchbox designs is a fascinating exploration of the cultural history of the world.

Take a drunken tour inside the world's largest known geode.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

An ancient Egyptian temple in the middle of Madrid, Spain.

This nostalgic Russian museum is full of USSR cultural artifacts from the 1970s and 80s.

A tea party concludes each visit to this Russian spice cookie sanctum.

The cathedral stands in New Jufa, Isfahan's Armenian quarter that was established in 1606.

Hundreds of tiny dead butterfly eyes gaze down at diners in this Australian eatery.

The first, and perhaps only, monument dedicated to Wikipedia.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

This Parisian café sticks almost exclusively to an ethos of reuse.

All that is left of an Armenian community that thrived in Dhaka 200 years ago.

A beautiful 19th-century Armenian mansion is preserved above an unassuming cafe.

A garden in Lisbon filled with giant porcelain creatures.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

After visiting hours, this picturesque waterfall is essentially turned "off" to be used for hydroelectric power.