One of the largest collections of carriages, buggies, and wagons in the world.

A small museum of antique transport that's a must-see for bicycle lovers.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

This lake-bound geographical marker sits at the point where three European countries intersect.

This beautiful example of Victorian engineering is the oldest water-balanced funicular anywhere in the world.

This Costa Rican topiary park is a surreal garden of unearthly delights.

This cobblestoned medieval-style town was entirely constructed in the 1990s and 2000s.

The skeletal white beams stand as a monument to religious dissent.

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

The largest retailer of seashells in the world.

This hulking behemoth is actually five interconnected towers built in the 1960s.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

French prisoners carved these boats from the bones of their meat rations.

This Victorian gate contains cryptic inscriptions in Greek, Latin, and Hebrew.

The first piece of public art dedicated to LGBT rights.

This gold-winged spire celebrates the first true flight around the world.

This remarkable collection devoted to the study of fish includes 1 million preserved specimens from all around the world.

An enclosed rotunda at the Henry Art Gallery in which viewers can look up and see the uninterrupted sky.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

A nondescript Seattle restaurant inherited a piece of European history.

This painted blacktop brings the classic arcade game to life.