The little-known final resting place of one of America's greatest writers.

One of the biggest markets in Asia, under one of the continent's largest domes.

This colonial town in Colombia sits around the largest stone paved square in South America.

Twelve hundred stone carvings guard this off-the-beaten-path Buddhist temple.

The enormous earthwork sculpture honors the ponies that lived and worked in the old colliery.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Nineteen ancient rock-cut Buddhist caves can be found on the outskirts of Mumbai.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

An outstanding piece of retro Sci-Fi architecture built into a sacred mountain.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

Prehistoric animals decorate this popular outdoor park.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

The highest tides in the world come in and out here twice a day, allowing you to essentially walk along the ocean floor.

This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

This network of narrow, medieval passages has the most delightful name.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

An abandoned 14th-century castle and prison complex on a small island in the Neva River.

A micronation on an islet along the coast of a Portuguese island.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

This ruin in a suburban park may be the place where Shakespeare's "A Midsummer Night's Dream" was first performed.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

This unusual rock formation looks like an apple that has been neatly sliced in half.

The capital of Cambodia is named after the hill on which this ancient temple complex stands.