(Budget Travel) -- On your next trip, you could be checking into a wine cask, a salvaged 727 airplane, or a room where the furniture defies the law of gravity.



The casks at the Hotel De Vrouwe Van Stavoren in the Netherlands once held the equivalent of 19,333 bottles of wine.



Upside-down stay



At Berlin's Propeller Island City Lodge, each of the 30 rooms is weird in its own way. The artist-owner, Lars Stroschen, has seen to that. One room, the first built, is made to look like a brightly painted medieval town, with an ultra-mini golf course surrounding the castle bed. Another has furniture attached to the ceiling, another has coffins for beds, and still another has lion cages on stilts (the Web site claims that kids "love to sleep" in them). Then there's the Freedom Room, which resembles a prison, complete with a toilet next to the bed -- oh, that German humor! 011-49/30-891-90-16, propeller-island.com.



A place to unwine'd



When they were owned by a Swiss château, the four enormous casks on the grounds of the Hotel De Vrouwe Van Stavoren in the Netherlands held the equivalent of 19,333 bottles of wine. Now, after some creative recycling, it's guests rather than booze that mellow out inside the casks. The richly worn and airtight oak barrels have two narrow beds, with a small sitting area outside. The grounds are quite close to tiny Stavoren's harbor, which was a major port in the Middle Ages. 011-31/51-46-81-202, hotel-vrouwevanstavoren.nl.



A bad trip (with none of the consequences)



The daughter of Ho Chi Minh's number two masterminded the Hang Nga Guest House and Art Gallery, a complex that more than earns its local nickname, the Crazy House. This LSD nightmare's three main buildings are Gaudi-esque concrete treehouse-like growths that appear as if they flowed organically out of the ground. Inside, the walls seem to dissolve into the floor, and right angles are avoided entirely. Each guest room is built around a different animal theme: the Eagle Room has a big-beaked bird standing atop a huge egg, while another has arm-sized ants crawling up the wall. The animal theme continues outside -- a large giraffe statue on the property contains a teahouse, and human-size "spider webs" are set up here and there. 011-84/63-82-20-70. Budget Travel: Check out these unusual hotels



In a league of its own



Hydrophobics should stay far from Jules' Undersea Lodge, named for novelist Jules Verne of "20,000 Leagues Under the Sea" fame. The 600-square-foot lodge, a former marine lab, is 21 feet underwater, close to the bottom of the mangrove-filled Emerald Lagoon, in Key Largo. You'll have to know how to scuba dive to reach your room, and guests without the mandatory certification must take a course at the hotel. Once you've reached the lodge, which sleeps up to six, you'll be close to angelfish, anemones, barracuda, oysters, and other creatures -- each room is equipped with a 42-inch window, so you don't need to be suited up to keep an eye on the neighborhood. 305/451-2353, jul.com.



Crash in a jet plane



Near a beach that's within Manuel Antonio National Park, the Hotel Costa Verde doesn't lack for great sights. But few are as amazing as its own 727 Fuselage Suite, a salvaged 1965 Boeing 727-100 that looks as if it's crashed into the Costa Rican jungle (it's actually mounted atop a 50-foot pillar and reached via a spiral staircase). The jet's interior was once able to hold up to 125 passengers, but there are few reminders left of its days in the service of South African Airways and Colombia's Avianca Airlines. The suite's two bedrooms, dining area, and sitting room are now covered over entirely in teak to match the surroundings. Guests can play "spot the toucan" on the small
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