Amsterdam — Europe's best-preserved 17th-century city — is simultaneously quaint and jarring, traditional and modern. Filled with history and still happy-go-lucky, it's a delight to explore. Uniquely entertaining Amsterdam shows off its Rembrandts and Van Goghs, more bikes than cars, flirting prostitutes, and pot-filled coffeeshops — all under tall, skinny facades leaning out over placid canals.